Cannot sign up – phone verification blocked (“Too many challenges sent”)

[monsara]

I am unable to complete registration due to phone number verification issues.

When trying to sign up, I am required to verify my phone number via SMS. However, after several attempts, the system shows the following error:

“Too many challenges sent for this phone number, please contact your admin.”

At this point:
• No SMS codes are being delivered
• I cannot retry verification
• I cannot complete registration
• There is no visible way to contact support or an admin to resolve this block

I have waited and retried later, but the issue persists.
This effectively blocks me from creating an account.

Please advise:
• How long this block lasts, or
• How to reset phone verification attempts, or
• How to complete registration without phone verification

Thank you.