Project reinstated by Google Trust & Safety, but Gemini GenerateContent still returns 403 "Your project has been denied access"

Gemini API
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1

Hello Google AI Team,

I’m experiencing an issue with the Gemini API that I have been unable to resolve despite extensive troubleshooting.

Project Information

  • Project Name: SAJ-AI-System
  • Project ID: saj-ai-system
  • API: Gemini API
  • Model Tested: gemini-2.5-flash

Background

My Google account and Google Cloud project were temporarily suspended by Google Trust & Safety.

After submitting an appeal, I received an official email stating:

“Your Google Cloud Platform/API project SAJ-AI-System (id: saj-ai-system) has been reinstated.”

Since receiving that email, I have been able to access the project again.

Current Problem

Any request to the GenerateContent endpoint returns:



403 Forbidden

Your project has been denied access.
Please contact support.

However, the ListModels endpoint works successfully.

What I Have Already Verified

:white_check_mark: Google account has been restored.

:white_check_mark: Google Cloud project has been reinstated.

:white_check_mark: Gemini API is enabled.

:white_check_mark: API key is valid.

:white_check_mark: Created a new API key after the project was reinstated.

:white_check_mark: API key is restricted only to the Gemini API (generativelanguage.googleapis.com).

:white_check_mark: Updated my application (n8n) with the new API key.

:white_check_mark: API credentials test successfully.

:white_check_mark: ListModels works successfully.

:cross_mark: GenerateContent always returns:



403 Forbidden

Your project has been denied access.

Google Cloud Metrics

Current metrics show:

  • ModelService.ListModels
    *
    Requests: Successful
    *
    Errors: 0%
  • GenerativeService.GenerateContent
    *
    Requests: Fail
    *
    Errors: 100% (403)

Additional Information

I also reviewed the recent Gemini API announcement regarding restricted API keys.

My API key is already restricted to the Gemini API, and I also generated a completely new restricted API key after my project was reinstated.

Therefore, I do not believe this is related to API key restrictions.

My Question

Could someone from the Google AI team please verify whether there is still a Trust & Safety restriction or backend authorization block preventing GenerateContent from being used on my reinstated project?

Is there anything else I need to do to fully restore Gemini API generation access?

Thank you very much for your time and assistance.

2

sounds like the account level suspension got lifted but theres still a separate generation specific block that wasnt cleared, since listmodels works but generatecontent doesnt. id reply directly on the same reinstatement email thread (or open a new support case) with your project id and mention this exact symptom so it gets routed to the right backend team: https://ai.google.dev/gemini-api/docs/troubleshooting

3

Hello @Secondactjournal ,

Getting a 403 API error response and / or seeing “Unavailable” next to your project in AI audio indicates a flag has been placed on your account. To proceed:

  1. Check for banners / error callouts in the AI Studio Projects page & the Billing page.

  2. If the issue isn’t clear from the above, contact Cloud Billing Support.

4

Hello,

Billing Support reports that my account is not an administrator on any billing account because no billing account exists for this project. Could you please confirm whether a billing account is now required to remove the “Your project has been denied access” restriction for GenerateContent, or whether there is still a Trust & Safety flag that needs to be cleared?