Verification loop and "Too many attempts" error during Third-Party Google Sign-In

Google Antigravity
1

Hi Google Support Team,

I am experiencing a critical authentication loop with my Google Account. Here is the exact issue I am facing:

  1. I can successfully log into my Gmail/Google account directly on my browser without any problems. I have full access to my account.

  2. However, when I try to log into any third-party website or app (specifically a platform called ‘Antigravity’) using the “Sign in with Google” (SSO) button, Google forces a security challenge and prompts me to verify my recovery phone number.

  3. I successfully receive the verification code via SMS and enter it correctly.

  4. Instead of logging me in, the process fails, and the third-party site asks me to “Sign in again.”

  5. This creates an endless loop. After repeating this process, Google eventually blocks the login entirely, showing a “Too many failed attempts / try again later” warning.

It seems my account is stuck in a false-positive security loop specifically for third-party access, even though I am the rightful owner and entering the correct OTPs.

Could you please investigate and remove this temporary security block or backend glitch from my account so I can access my paid third-party services?