Request to restore Gemini API access — "Your project has been denied access" (403, false positive)

Google AI Studio
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1

Hello,
My Gemini API access returns 403 PERMISSION_DENIED: “Your project has been denied access. Please contact support.” for all requests (model gemini-3.1-flash-lite).
I confirmed this is not a client/App Check issue — a raw curl directly to generativelanguage.googleapis.com with the project API key returns the same 403.

It worked normally for a while, then suddenly started being denied.
Happens on both an organization-owned and a no-organization project under the same account.
The same account works fine in Google AI Studio, so the account is active.
Legitimate use only: a small personal health/nutrition app, very low request volume, no policy violation.
Region: South Korea.

This looks like a false-positive abuse-filter block. Could the team please review and restore Gemini API access? I can share the project IDs and account email privately if a moderator requests them. Thank you.

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Hello @Lee_David ,

This is very likely caused by an issue which is currently only visible in Google Cloud console. We’re working to move visibility of this into AI Studio. To resolve this:

Open the Cloud console & select your project
You should see a banner which explains the issue / may allow you to appeal