Conncion refuse while connecting Firebase using ESP32

[vfirebase]

PFB code it giving connection refused error
#include <WiFi.h>
#include <IOXhop_FirebaseESP32.h>
//#include <FirebaseArduino.h>
//#include <SoftwareSerial.h>
#include <WiFiClient.h>
#include <DNSServer.h>

//#define FIREBASE_Host "xxxxxxx.firebaseio.com" // replace with your Firebase Host
//#define FIREBASE_authorization_key "Jgq6M6eeyqurhOCL0FB7Mq4Rlat3a6Hcg1*******" // replace with your secret key
//#define Your_SSID "Write_your_SSID" // replace with your SSID
//#define Your_PASSWORD "*********" //replace with your Password

#define FIREBASE_Host "xxxxxxx.firebaseio.com" //client3-33284.firebaseio.com
#define FIREBASE_authorization_key "xxxxxxxrxttU8Ez3bGb4" //EnTrALPdj2L1DmkqDTt4tr9DsrlcTeO8xQhU8OGg
//#define Your_SSID "BA" //Optic Network
//#define Your_PASSWORD "ADVIR123456" //dzinesameersir@2021
#define Your_SSID "Optic Network"
#define Your_PASSWORD "xxxxxxx@2021"

String led_state = ""; // LED State
int led_gpio = 2;

void setup() {

Serial.begin(115200);
delay(1000);
//pinMode(2, OUTPUT);
WiFi.begin(Your_SSID, Your_PASSWORD);
Serial.print("Connecting to WIFI");
while (WiFi.status() != WL_CONNECTED) {
Serial.print(".");
delay(500);
}

Serial.println();
Serial.print("Connected to WIFI!");
Serial.println();
Serial.print("IP Address: ");
Serial.println(WiFi.localIP()); //print local IP address
Firebase.begin(FIREBASE_Host, FIREBASE_authorization_key); // connect to firebase
Firebase.setString("Master_Bedroom", "OFF"); //send initial string of led status

}

void loop() {

Firebase.setString("Master_Bedroom", "OFF");
if(Firebase.failed())
{
Serial.println(Firebase.error());
}

led_state = Firebase.getString("Master_Bedroom");
// Serial.println(led_state);
if (led_state == "ON") {

Serial.println("Led is ON");
digitalWrite(led_gpio, HIGH);
}

else if (led_state == "OFF") {

Serial.println("Led is OFF");
digitalWrite(led_gpio, LOW);
}

else
{
//Serial.println("Wrong value entered! Only ON or OFF accepted");

}

}