Help needed: Request for manual review — 403 PERMISSION_DENIED / Project Restricted

Hello,

I am requesting a manual review of Gemini API access for my Google Cloud project.

Google AI Studio currently shows:

Billing tier: Unavailable
Status: Restricted

A direct REST request to generateContent returns:

403 PERMISSION_DENIED
Your project has been denied access. Please contact support.

I have already confirmed:

Personal Google account
Account holder is over 18
2-Step Verification enabled
No organization / Workspace management
No VPN or proxy
Project successfully imported into Google AI Studio
API request tested directly with curl, outside any application or SDK

I would like to use the eligible Free Tier and would appreciate a manual review of this restriction.

Project ID: charming-sonar-507606-..

Thank you.