Request for manual review — Gemini API 403 PERMISSION_DENIED / Billing tier unavailable

Hello Google AI Developers team,

I would like to request a manual review of my Gemini API project.

Google AI Studio currently shows:

  • Billing tier: Unavailable

  • Billing has not been enabled

  • Payment information has not been added

When I make a Gemini API request from Google Apps Script, I receive:

HTTP 403 PERMISSION_DENIED

“Your project has been denied access. Please contact support.”

I have already completed the following:

  • My Google Account has a date of birth registered.

  • My phone number is verified.

  • 2-Step Verification is enabled.

  • The API key was created in Google AI Studio.

  • Google Apps Script can successfully access my Gmail account.

My intended use is a personal project to analyze my own Gmail messages and identify required actions and deadlines.

I would like to use the available free tier and do not want to enable paid billing.

Could you please review the access/security status of this project and let me know whether an account or project restriction is preventing Gemini API access?

Thank you.