diff --git a/packages/grid_client/src/helpers/validator.ts b/packages/grid_client/src/helpers/validator.ts
index 2d6c5cb809..99f5a810ec 100644
--- a/packages/grid_client/src/helpers/validator.ts
+++ b/packages/grid_client/src/helpers/validator.ts
@@ -1,6 +1,7 @@
 import { ValidationError } from "@threefold/types";
 import { plainToInstance } from "class-transformer";
-import { validateSync } from "class-validator";
+import { buildMessage, registerDecorator, validateSync } from "class-validator";
+import { ValidationOptions as ClassValidatorValidationOptions } from "class-validator";
 
 function validateObject(obj) {
   const errors = validateSync(obj);
@@ -30,7 +31,26 @@ function validateHexSeed(seed: string, length: number): boolean {
   }
   return true;
 }
-
+function IsAlphanumericExpectUnderscore(validationOptions?: ClassValidatorValidationOptions) {
+  return function (object: any, propertyName: string) {
+    registerDecorator({
+      name: "IsAlphanumericExpectUnderscore",
+      target: object.constructor,
+      propertyName: propertyName,
+      options: validationOptions,
+      constraints: [`${propertyName} must contain only letters, numbers, and underscores`],
+      validator: {
+        validate(value: any) {
+          return /^[a-zA-Z0-9_]*$/.test(value);
+        },
+        defaultMessage: buildMessage(
+          eachPrefix => eachPrefix + "$property must contain only letters, numbers, and underscores",
+          validationOptions,
+        ),
+      },
+    });
+  };
+}
 interface ValidationOptions {
   props?: boolean | string | string[];
   methods?: boolean | string | string[];
@@ -178,4 +198,11 @@ function _getMethods(ctor: any, options: Required<ValidationOptions>): string[]
   return [];
 }
 
-export { validateObject, validateInput, validateHexSeed, type ValidationOptions, ValidateMembers };
+export {
+  validateObject,
+  validateInput,
+  validateHexSeed,
+  type ValidationOptions,
+  ValidateMembers,
+  IsAlphanumericExpectUnderscore,
+};
diff --git a/packages/grid_client/src/modules/models.ts b/packages/grid_client/src/modules/models.ts
index 061724c00c..662eb13fee 100644
--- a/packages/grid_client/src/modules/models.ts
+++ b/packages/grid_client/src/modules/models.ts
@@ -20,10 +20,11 @@ import {
   ValidateNested,
 } from "class-validator";
 
+import { IsAlphanumericExpectUnderscore } from "../helpers";
 import { Deployment } from "../zos/deployment";
 import { ZdbModes } from "../zos/zdb";
 import { blockchainType } from "./blockchainInterface";
-const NameLength = 15;
+const NameLength = 50;
 const FarmNameLength = 40;
 
 enum ContractStates {
@@ -97,11 +98,11 @@ class MyceliumNetworkModel {
 }
 
 class BaseGetDeleteModel {
-  @Expose() @IsString() @IsNotEmpty() @IsAlphanumeric() @MaxLength(NameLength) name: string;
+  @Expose() @IsString() @IsNotEmpty() @IsAlphanumericExpectUnderscore() @MaxLength(NameLength) name: string;
 }
 
 class MachineModel {
-  @Expose() @IsString() @IsNotEmpty() @IsAlphanumeric() @MaxLength(NameLength) name: string;
+  @Expose() @IsString() @IsNotEmpty() @MaxLength(NameLength) @IsAlphanumericExpectUnderscore() name: string;
   @Expose() @IsInt() @Min(1) node_id: number;
   @Expose() @IsOptional() @Type(() => DiskModel) @ValidateNested({ each: true }) disks?: DiskModel[];
   @Expose() @IsOptional() @Type(() => QSFSDiskModel) @ValidateNested({ each: true }) qsfs_disks?: QSFSDiskModel[];
@@ -124,7 +125,7 @@ class MachineModel {
 }
 
 class MachinesModel {
-  @Expose() @IsString() @IsNotEmpty() @IsAlphanumeric() @MaxLength(NameLength) name: string;
+  @Expose() @IsString() @IsNotEmpty() @IsAlphanumericExpectUnderscore() @MaxLength(NameLength) name: string;
   @Expose() @Type(() => NetworkModel) @ValidateNested() network: NetworkModel;
   @Expose() @Type(() => MachineModel) @ValidateNested({ each: true }) machines: MachineModel[];
   @Expose() @IsString() @IsOptional() metadata?: string;
@@ -137,7 +138,7 @@ class AddMachineModel extends MachineModel {
 }
 
 class DeleteMachineModel {
-  @Expose() @IsString() @IsNotEmpty() @IsAlphanumeric() @MaxLength(NameLength) name: string;
+  @Expose() @IsString() @IsNotEmpty() @IsAlphanumericExpectUnderscore() @MaxLength(NameLength) name: string;
   @Expose() @IsString() @IsNotEmpty() @IsAlphanumeric() @MaxLength(NameLength) deployment_name: string;
 }
 
@@ -233,7 +234,7 @@ class QSFSZDBGetModel extends BaseGetDeleteModel {}
 class QSFSZDBDeleteModel extends BaseGetDeleteModel {}
 
 class BaseGatewayNameModel {
-  @Expose() @IsString() @IsNotEmpty() @IsAlphanumeric() @MaxLength(NameLength + 20) name: string;
+  @Expose() @IsString() @IsNotEmpty() @IsAlphanumeric() @MaxLength(NameLength) name: string;
 }
 
 class GatewayFQDNModel extends BaseGatewayNameModel {
@@ -340,7 +341,7 @@ class GetServiceContractModel {
   @Expose() @IsInt() @Min(1) serviceId: number;
 }
 class NameContractGetModel {
-  @Expose() @IsString() @IsNotEmpty() @IsAlphanumeric() @MaxLength(NameLength + 20) name: string;
+  @Expose() @IsString() @IsNotEmpty() @IsAlphanumeric() @MaxLength(NameLength) name: string;
 }
 
 class NodeContractUpdateModel {
diff --git a/packages/playground/src/components/caprover_worker.vue b/packages/playground/src/components/caprover_worker.vue
index 6b3a05ea8a..86ebc8887b 100644
--- a/packages/playground/src/components/caprover_worker.vue
+++ b/packages/playground/src/components/caprover_worker.vue
@@ -4,10 +4,10 @@
       :rules="[
         validators.required('Name is required.'),
         validators.isLowercase('Name should consist of lowercase letters only.'),
-        validators.isAlphanumeric('Name should consist of letters and numbers only.'),
+        validators.IsAlphanumericExpectUnderscore('Name should consist of letters ,numbers and underscores only.'),
         name => validators.isAlpha('Name must start with alphabet char.')(name[0]),
         validators.minLength('Name must be at least 2 characters.', 2),
-        validators.maxLength('Name cannot exceed 15 characters.', 15),
+        validators.maxLength('Name cannot exceed 50 characters.', 50),
       ]"
       :value="$props.modelValue.name"
       #="{ props }"
diff --git a/packages/playground/src/components/k8s_worker.vue b/packages/playground/src/components/k8s_worker.vue
index 15a0cb3848..7451c1408c 100644
--- a/packages/playground/src/components/k8s_worker.vue
+++ b/packages/playground/src/components/k8s_worker.vue
@@ -8,7 +8,7 @@
         name => validators.isAlpha('Name must start with alphabet char.')(name[0]),
         validators.isAlphanumeric('Name should consist of alphabets & numbers only.'),
         validators.minLength('Name minimum length is 2 chars.', 2),
-        validators.maxLength('Name max length is 15 chars.', 15),
+        validators.maxLength('Name max length is 50 chars.', 50),
       ]"
       #="{ props }"
     >
diff --git a/packages/playground/src/components/manage_gateway_dialog.vue b/packages/playground/src/components/manage_gateway_dialog.vue
index 3b619ec022..c9444d3fa2 100644
--- a/packages/playground/src/components/manage_gateway_dialog.vue
+++ b/packages/playground/src/components/manage_gateway_dialog.vue
@@ -122,7 +122,7 @@
                   validators.isAlphanumeric('Subdomain should consist of letters and numbers only.'),
                   subdomain => validators.isAlpha('Subdomain must start with alphabet char.')(subdomain[0]),
                   validators.minLength('Subdomain must be at least 4 characters.', 4),
-                  subdomain => validators.maxLength('Subdomain cannot exceed 30 characters.', 30)(subdomain),
+                  subdomain => validators.maxLength('Subdomain cannot exceed 50 characters.', 50)(subdomain),
                 ]"
                 :async-rules="gatewayTab === 1 ? [validateSubdomain] : []"
                 #="{ props }"
diff --git a/packages/playground/src/utils/validators.ts b/packages/playground/src/utils/validators.ts
index d76d85130b..30fc932f3a 100644
--- a/packages/playground/src/utils/validators.ts
+++ b/packages/playground/src/utils/validators.ts
@@ -109,6 +109,14 @@ export function requiredTrue(msg: string) {
   };
 }
 
+export function IsAlphanumericExpectUnderscore(msg: string) {
+  return (value: string) => {
+    if (!/^[a-zA-Z0-9_]*$/.test(value)) {
+      return { message: msg, requiredTrue: true };
+    }
+  };
+}
+
 export function isAfter(msg: string, date?: string) {
   return (value: string) => {
     if (!validator.isAfter(value, date)) {
diff --git a/packages/playground/src/weblets/freeflow.vue b/packages/playground/src/weblets/freeflow.vue
index 4a53e60d29..6e4e213565 100644
--- a/packages/playground/src/weblets/freeflow.vue
+++ b/packages/playground/src/weblets/freeflow.vue
@@ -18,9 +18,9 @@
         :value="threebotName"
         :rules="[
           validators.required('Name is required.'),
-          validators.isAlphanumeric('Name should consist of letters and numbers only.'),
+          validators.IsAlphanumericExpectUnderscore('Name should consist of letters ,numbers and underscores only.'),
           validators.minLength('Name must be at least 4 characters.', 4),
-          validators.maxLength('Name cannot exceed 15 characters.', 15),
+          validators.maxLength('Name cannot exceed 50 characters.', 50),
         ]"
         #="{ props }"
       >
diff --git a/packages/playground/src/weblets/full_vm.vue b/packages/playground/src/weblets/full_vm.vue
index f726d1b523..56d7b86521 100644
--- a/packages/playground/src/weblets/full_vm.vue
+++ b/packages/playground/src/weblets/full_vm.vue
@@ -24,11 +24,10 @@
           :value="name"
           :rules="[
             validators.required('Name is required.'),
-            validators.isLowercase('Name should consist of lowercase letters only.'),
-            validators.isAlphanumeric('Name should consist of letters and numbers only.'),
+            validators.IsAlphanumericExpectUnderscore('Name should consist of letters ,numbers and underscores only.'),
             name => validators.isAlpha('Name must start with alphabet char.')(name[0]),
             validators.minLength('Name must be at least 2 characters.', 2),
-            validators.maxLength('Name cannot exceed 15 characters.', 15),
+            validators.maxLength('Name cannot exceed 50 characters.', 50),
           ]"
           #="{ props }"
         >
@@ -106,7 +105,7 @@
               name => validators.isAlpha('Name must start with alphabet char.')(name[0]),
               validators.minLength('Disk minLength is 2 chars.', 2),
               validators.isAlphanumeric('Disk name only accepts alphanumeric chars.'),
-              validators.maxLength('Disk maxLength is 15 chars.', 15),
+              validators.maxLength('Disk maxLength is 50 chars.', 50),
             ]"
             #="{ props }"
           >
diff --git a/packages/playground/src/weblets/micro_vm.vue b/packages/playground/src/weblets/micro_vm.vue
index a6a7e8083e..436842d708 100644
--- a/packages/playground/src/weblets/micro_vm.vue
+++ b/packages/playground/src/weblets/micro_vm.vue
@@ -26,11 +26,10 @@
           :value="name"
           :rules="[
             validators.required('Name is required.'),
-            validators.isLowercase('Name should consist of lowercase letters only.'),
-            validators.isAlphanumeric('Name should consist of alphabets & numbers only.'),
+            validators.IsAlphanumericExpectUnderscore('Name should consist of letters ,numbers and underscores only.'),
             name => validators.isAlpha('Name must start with alphabet char.')(name[0]),
             validators.minLength('Name must be at least 2 characters.', 2),
-            validators.maxLength('Name cannot exceed 15 characters.', 15),
+            validators.maxLength('Name cannot exceed 50 characters.', 50),
           ]"
           #="{ props }"
         >
@@ -132,7 +131,7 @@
               }),
               validators.minLength('Disk minLength is 2 chars.', 2),
               validators.isAlphanumeric('Disk name only accepts alphanumeric chars.'),
-              validators.maxLength('Disk maxLength is 15 chars.', 15),
+              validators.maxLength('Disk maxLength is 50 chars.', 50),
             ]"
             #="{ props }"
           >
diff --git a/packages/playground/src/weblets/tf_algorand.vue b/packages/playground/src/weblets/tf_algorand.vue
index beaeff3a44..501c37522c 100644
--- a/packages/playground/src/weblets/tf_algorand.vue
+++ b/packages/playground/src/weblets/tf_algorand.vue
@@ -16,11 +16,10 @@
         :value="name"
         :rules="[
           validators.required('Name is required.'),
-          validators.isLowercase('Name should consist of lowercase letters only.'),
-          validators.isAlphanumeric('Name should consist of letters and numbers only.'),
+          validators.IsAlphanumericExpectUnderscore('Name should consist of letters ,numbers and underscores only.'),
           name => validators.isAlpha('Name must start with alphabet char.')(name[0]),
           validators.minLength('Name must be at least 2 characters.', 2),
-          validators.maxLength('Name cannot exceed 15 characters.', 15),
+          validators.maxLength('Name cannot exceed 50 characters.', 50),
         ]"
         #="{ props }"
       >
diff --git a/packages/playground/src/weblets/tf_casperlabs.vue b/packages/playground/src/weblets/tf_casperlabs.vue
index d179e37837..8c78555b45 100644
--- a/packages/playground/src/weblets/tf_casperlabs.vue
+++ b/packages/playground/src/weblets/tf_casperlabs.vue
@@ -17,11 +17,10 @@
         :value="name"
         :rules="[
           validators.required('Name is required.'),
-          validators.isLowercase('Name should consist of lowercase letters only.'),
-          validators.isAlphanumeric('Name should consist of letters and numbers only.'),
+          validators.IsAlphanumericExpectUnderscore('Name should consist of letters ,numbers and underscores only.'),
           name => validators.isAlpha('Name must start with alphabet char.')(name[0]),
           validators.minLength('Name must be at least 2 characters.', 2),
-          validators.maxLength('Name cannot exceed 15 characters.', 15),
+          validators.maxLength('Name cannot exceed 50 characters.', 50),
         ]"
         #="{ props }"
       >
diff --git a/packages/playground/src/weblets/tf_discourse.vue b/packages/playground/src/weblets/tf_discourse.vue
index e16db4d011..3f73d1aa4d 100644
--- a/packages/playground/src/weblets/tf_discourse.vue
+++ b/packages/playground/src/weblets/tf_discourse.vue
@@ -23,11 +23,10 @@
           :value="name"
           :rules="[
             validators.required('Name is required.'),
-            validators.isLowercase('Name should consist of lowercase letters only.'),
-            validators.isAlphanumeric('Name should consist of letters and numbers only.'),
+            validators.IsAlphanumericExpectUnderscore('Name should consist of letters ,numbers and underscores only.'),
             name => validators.isAlpha('Name must start with alphabet char.')(name[0]),
             validators.minLength('Name must be at least 2 characters.', 2),
-            validators.maxLength('Name cannot exceed 15 characters.', 15),
+            validators.maxLength('Name cannot exceed 50 characters.', 50),
           ]"
           #="{ props }"
         >
diff --git a/packages/playground/src/weblets/tf_funkwhale.vue b/packages/playground/src/weblets/tf_funkwhale.vue
index bb34832fe0..0b5f4e3cf7 100644
--- a/packages/playground/src/weblets/tf_funkwhale.vue
+++ b/packages/playground/src/weblets/tf_funkwhale.vue
@@ -17,11 +17,10 @@
         :value="name"
         :rules="[
           validators.required('Name is required.'),
-          validators.isLowercase('Name should consist of lowercase letters only.'),
-          validators.isAlphanumeric('Name should consist of letters and numbers only.'),
+          validators.IsAlphanumericExpectUnderscore('Name should consist of letters ,numbers and underscores only.'),
           name => validators.isAlpha('Name must start with alphabet char.')(name[0]),
           validators.minLength('Name must be at least 2 characters.', 2),
-          validators.maxLength('Name cannot exceed 15 characters.', 15),
+          validators.maxLength('Name cannot exceed 50 characters.', 50),
         ]"
         #="{ props }"
       >
@@ -38,7 +37,7 @@
           validators.isAlphanumeric('Username should consist of letters and numbers only.'),
           username => validators.isAlpha('Username must start with alphabet char.')(username[0]),
           validators.minLength('Username must be at least 2 characters.', 2),
-          validators.maxLength('Username cannot exceed 15 characters.', 15),
+          validators.maxLength('Username cannot exceed 50 characters.', 50),
         ]"
         #="{ props }"
       >
diff --git a/packages/playground/src/weblets/tf_kubernetes.vue b/packages/playground/src/weblets/tf_kubernetes.vue
index 53eb6fb3aa..15ae2e0b48 100644
--- a/packages/playground/src/weblets/tf_kubernetes.vue
+++ b/packages/playground/src/weblets/tf_kubernetes.vue
@@ -27,11 +27,10 @@
           :value="name"
           :rules="[
             validators.required('Name is required.'),
-            validators.isLowercase('Name should consist of lowercase letters only.'),
             name => validators.isAlpha('Name must start with alphabet char.')(name[0]),
-            validators.isAlphanumeric('Name should consist of alphabets & numbers only.'),
+            validators.IsAlphanumericExpectUnderscore('Name should consist of letters ,numbers and underscores only.'),
             validators.minLength('Name minimum length is 2 chars.', 2),
-            validators.maxLength('Name max length is 15 chars.', 15),
+            validators.maxLength('Name max length is 50 chars.', 50),
           ]"
           #="{ props }"
         >
diff --git a/packages/playground/src/weblets/tf_mattermost.vue b/packages/playground/src/weblets/tf_mattermost.vue
index 69fc8b97b7..c091cd2455 100644
--- a/packages/playground/src/weblets/tf_mattermost.vue
+++ b/packages/playground/src/weblets/tf_mattermost.vue
@@ -24,11 +24,10 @@
           :value="name"
           :rules="[
             validators.required('Name is required.'),
-            validators.isLowercase('Name should consist of lowercase letters only.'),
-            validators.isAlphanumeric('Name should consist of letters and numbers only.'),
+            validators.IsAlphanumericExpectUnderscore('Name should consist of letters ,numbers and underscores only.'),
             name => validators.isAlpha('Name must start with alphabet char.')(name[0]),
             validators.minLength('Name must be at least 2 characters.', 2),
-            validators.maxLength('Name cannot exceed 15 characters.', 15),
+            validators.maxLength('Name cannot exceed 50 characters.', 50),
           ]"
           #="{ props }"
         >
diff --git a/packages/playground/src/weblets/tf_nextcloud.vue b/packages/playground/src/weblets/tf_nextcloud.vue
index f7de9e86c8..2ea5c686dd 100644
--- a/packages/playground/src/weblets/tf_nextcloud.vue
+++ b/packages/playground/src/weblets/tf_nextcloud.vue
@@ -17,11 +17,10 @@
         :value="name"
         :rules="[
           validators.required('Name is required.'),
-          validators.isLowercase('Name should consist of lowercase letters only.'),
-          validators.isAlphanumeric('Name should consist of letters and numbers only.'),
+          validators.IsAlphanumericExpectUnderscore('Name should consist of letters ,numbers and underscores only.'),
           name => validators.isAlpha('Name must start with alphabet char.')(name[0]),
           validators.minLength('Name must be at least 2 characters.', 2),
-          validators.maxLength('Name cannot exceed 15 characters.', 15),
+          validators.maxLength('Name cannot exceed 50 characters.', 50),
         ]"
         #="{ props }"
       >
diff --git a/packages/playground/src/weblets/tf_node_pilot.vue b/packages/playground/src/weblets/tf_node_pilot.vue
index 6e1c08fed1..85cf8484b6 100644
--- a/packages/playground/src/weblets/tf_node_pilot.vue
+++ b/packages/playground/src/weblets/tf_node_pilot.vue
@@ -16,8 +16,7 @@
         :value="name"
         :rules="[
           validators.required('Name is required.'),
-          validators.isLowercase('Name should consist of lowercase letters only.'),
-          validators.isAlphanumeric('Name should consist of letters and numbers only.'),
+          validators.IsAlphanumericExpectUnderscore('Name should consist of letters ,numbers and underscores only.'),
           name => validators.isAlpha('Name must start with alphabet char.')(name[0]),
           validators.minLength('Name must be at least 2 characters.', 2),
           validators.maxLength('Name cannot exceed 15 characters.', 15),
diff --git a/packages/playground/src/weblets/tf_nostr.vue b/packages/playground/src/weblets/tf_nostr.vue
index 5bf6e16c99..1903ea9636 100644
--- a/packages/playground/src/weblets/tf_nostr.vue
+++ b/packages/playground/src/weblets/tf_nostr.vue
@@ -19,11 +19,10 @@
           :value="name"
           :rules="[
             validators.required('Name is required.'),
-            validators.isLowercase('Name should consist of lowercase letters only.'),
-            validators.isAlphanumeric('Name should consist of alphabets & numbers only.'),
+            validators.IsAlphanumericExpectUnderscore('Name should consist of letters ,numbers and underscores only.'),
             name => validators.isAlpha('Name must start with alphabet char.')(name[0]),
             validators.minLength('Name must be at least 2 characters.', 2),
-            validators.maxLength('Name cannot exceed 15 characters.', 15),
+            validators.maxLength('Name cannot exceed 50 characters.', 50),
           ]"
           #="{ props }"
         >
diff --git a/packages/playground/src/weblets/tf_owncloud.vue b/packages/playground/src/weblets/tf_owncloud.vue
index 23ef8540be..6203a7605a 100644
--- a/packages/playground/src/weblets/tf_owncloud.vue
+++ b/packages/playground/src/weblets/tf_owncloud.vue
@@ -25,11 +25,10 @@
           :value="name"
           :rules="[
             validators.required('Name is required.'),
-            validators.isLowercase('Name should consist of lowercase letters only.'),
-            validators.isAlphanumeric('Name should consist of letters and numbers only.'),
+            validators.IsAlphanumericExpectUnderscore('Name should consist of letters ,numbers and underscores only.'),
             name => validators.isAlpha('Name must start with alphabet char.')(name[0]),
             validators.minLength('Name must be at least 2 characters.', 2),
-            validators.maxLength('Name cannot exceed 15 characters.', 15),
+            validators.maxLength('Name cannot exceed 50 characters.', 50),
           ]"
           #="{ props }"
         >
@@ -42,7 +41,6 @@
           :value="username"
           :rules="[
             validators.required('Username is required.'),
-            validators.isLowercase('Username should consist of lowercase letters only.'),
             validators.isAlphanumeric('Username should consist of letters and numbers only.'),
             username => validators.isAlpha('Username must start with alphabet char.')(username[0]),
             validators.minLength('Username must be at least 2 characters.', 2),
diff --git a/packages/playground/src/weblets/tf_peertube.vue b/packages/playground/src/weblets/tf_peertube.vue
index a95363861d..7e8a895ee4 100644
--- a/packages/playground/src/weblets/tf_peertube.vue
+++ b/packages/playground/src/weblets/tf_peertube.vue
@@ -17,11 +17,10 @@
         :value="name"
         :rules="[
           validators.required('Name is required.'),
-          validators.isLowercase('Name should consist of lowercase letters only.'),
-          validators.isAlphanumeric('Name should consist of letters and numbers only.'),
+          validators.IsAlphanumericExpectUnderscore('Name should consist of letters ,numbers and underscores only.'),
           name => validators.isAlpha('Name must start with alphabet char.')(name[0]),
           validators.minLength('Name must be at least 2 characters.', 2),
-          validators.maxLength('Name cannot exceed 15 characters.', 15),
+          validators.maxLength('Name cannot exceed 50 characters.', 50),
         ]"
         #="{ props }"
       >
diff --git a/packages/playground/src/weblets/tf_presearch.vue b/packages/playground/src/weblets/tf_presearch.vue
index a70bfe156b..de9501a054 100644
--- a/packages/playground/src/weblets/tf_presearch.vue
+++ b/packages/playground/src/weblets/tf_presearch.vue
@@ -29,11 +29,10 @@
           :value="name"
           :rules="[
             validators.required('Name is required.'),
-            validators.isLowercase('Name should consist of lowercase letters only.'),
-            validators.isAlphanumeric('Name should consist of letters and numbers only.'),
+            validators.IsAlphanumericExpectUnderscore('Name should consist of letters ,numbers and underscores only.'),
             name => validators.isAlpha('Name must start with alphabet char.')(name[0]),
             validators.minLength('Name must be at least 2 characters.', 2),
-            validators.maxLength('Name cannot exceed 15 characters.', 15),
+            validators.maxLength('Name cannot exceed 50 characters.', 50),
           ]"
           #="{ props }"
         >
diff --git a/packages/playground/src/weblets/tf_staticwebsite.vue b/packages/playground/src/weblets/tf_staticwebsite.vue
index 3726eb052f..a1b3d2075f 100644
--- a/packages/playground/src/weblets/tf_staticwebsite.vue
+++ b/packages/playground/src/weblets/tf_staticwebsite.vue
@@ -17,11 +17,10 @@
         :value="name"
         :rules="[
           validators.required('Name is required.'),
-          validators.isLowercase('Name should consist of lowercase letters only.'),
-          validators.isAlphanumeric('Name should consist of letters and numbers only.'),
+          validators.IsAlphanumericExpectUnderscore('Name should consist of letters ,numbers and underscores only.'),
           name => validators.isAlpha('Name must start with alphabet char.')(name[0]),
           validators.minLength('Name must be at least 2 characters.', 2),
-          validators.maxLength('Name cannot exceed 15 characters.', 15),
+          validators.maxLength('Name cannot exceed 50 characters.', 50),
         ]"
         #="{ props }"
       >
diff --git a/packages/playground/src/weblets/tf_subsquid.vue b/packages/playground/src/weblets/tf_subsquid.vue
index 3f5fbc8760..a1ad556add 100644
--- a/packages/playground/src/weblets/tf_subsquid.vue
+++ b/packages/playground/src/weblets/tf_subsquid.vue
@@ -17,11 +17,10 @@
         :value="name"
         :rules="[
           validators.required('Name is required.'),
-          validators.isLowercase('Name should consist of lowercase letters only.'),
-          validators.isAlphanumeric('Name should consist of letters and numbers only.'),
+          validators.IsAlphanumericExpectUnderscore('Name should consist of letters ,numbers and underscores only.'),
           name => validators.isAlpha('Name must start with alphabet char.')(name[0]),
           validators.minLength('Name must be at least 2 characters.', 2),
-          validators.maxLength('Name cannot exceed 15 characters.', 15),
+          validators.maxLength('Name cannot exceed 50 characters.', 50),
         ]"
         #="{ props }"
       >
diff --git a/packages/playground/src/weblets/tf_taiga.vue b/packages/playground/src/weblets/tf_taiga.vue
index 983b5a81ce..82e5ff99a5 100644
--- a/packages/playground/src/weblets/tf_taiga.vue
+++ b/packages/playground/src/weblets/tf_taiga.vue
@@ -24,10 +24,10 @@
           :rules="[
             validators.required('Name is required.'),
             validators.isLowercase('Name should consist of lowercase letters only.'),
-            validators.isAlphanumeric('Name should consist of letters and numbers only.'),
+            validators.IsAlphanumericExpectUnderscore('Name should consist of letters ,numbers and underscores only.'),
             name => validators.isAlpha('Name must start with alphabet char.')(name[0]),
             validators.minLength('Name must be at least 2 characters.', 2),
-            validators.maxLength('Name cannot exceed 15 characters.', 15),
+            validators.maxLength('Name cannot exceed 50 characters.', 50),
           ]"
           #="{ props }"
         >
@@ -44,7 +44,7 @@
             validators.isAlphanumeric('Username should consist of letters and numbers only.'),
             username => validators.isAlpha('Username must start with alphabet char.')(username[0]),
             validators.minLength('Username must be at least 2 characters.', 2),
-            validators.maxLength('Username cannot exceed 15 characters.', 15),
+            validators.maxLength('Username cannot exceed 50 characters.', 50),
           ]"
           #="{ props }"
         >
diff --git a/packages/playground/src/weblets/tf_umbrel.vue b/packages/playground/src/weblets/tf_umbrel.vue
index f26984736d..29d2e71d7c 100644
--- a/packages/playground/src/weblets/tf_umbrel.vue
+++ b/packages/playground/src/weblets/tf_umbrel.vue
@@ -17,11 +17,10 @@
         :value="name"
         :rules="[
           validators.required('Name is required.'),
-          validators.isLowercase('Name should consist of lowercase letters only.'),
-          validators.isAlphanumeric('Name should consist of letters and numbers only.'),
+          validators.IsAlphanumericExpectUnderscore('Name should consist of letters ,numbers and underscores only.'),
           name => validators.isAlpha('Name must start with alphabet char.')(name[0]),
           validators.minLength('Name must be at least 2 characters.', 2),
-          validators.maxLength('Name cannot exceed 15 characters.', 15),
+          validators.maxLength('Name cannot exceed 50 characters.', 50),
         ]"
         #="{ props }"
       >
diff --git a/packages/playground/src/weblets/tf_wordpress.vue b/packages/playground/src/weblets/tf_wordpress.vue
index b57fdd649c..9786e915f6 100644
--- a/packages/playground/src/weblets/tf_wordpress.vue
+++ b/packages/playground/src/weblets/tf_wordpress.vue
@@ -17,11 +17,10 @@
         :value="name"
         :rules="[
           validators.required('Name is required.'),
-          validators.isLowercase('Name should consist of lowercase letters only.'),
-          validators.isAlphanumeric('Name should consist of letters and numbers only.'),
+          validators.IsAlphanumericExpectUnderscore('Name should consist of letters ,numbers and underscores only.'),
           name => validators.isAlpha('Name must start with alphabet char.')(name[0]),
           validators.minLength('Name must be at least 2 characters.', 2),
-          validators.maxLength('Name cannot exceed 15 characters.', 15),
+          validators.maxLength('Name cannot exceed 50 characters.', 50),
         ]"
         #="{ props }"
       >
diff --git a/packages/playground/src/weblets/tfrobot.vue b/packages/playground/src/weblets/tfrobot.vue
index 2bb0bb2b5a..7ea7563c3d 100644
--- a/packages/playground/src/weblets/tfrobot.vue
+++ b/packages/playground/src/weblets/tfrobot.vue
@@ -26,11 +26,10 @@
           :value="name"
           :rules="[
             validators.required('Name is required.'),
-            validators.isLowercase('Name should consist of lowercase letters only.'),
-            validators.isAlphanumeric('Name should consist of alphabets & numbers only.'),
+            validators.IsAlphanumericExpectUnderscore('Name should consist of letters ,numbers and underscores only.'),
             name => validators.isAlpha('Name must start with alphabet char.')(name[0]),
             validators.minLength('Name must be at least 2 characters.', 2),
-            validators.maxLength('Name cannot exceed 15 characters.', 15),
+            validators.maxLength('Name cannot exceed 50 characters.', 50),
           ]"
           #="{ props }"
         >