Manual billing sync request — project stuck on Free Tier despite funded Prepay balance

Hello Google Gemini API Team,

I am requesting a manual billing/tier synchronization review.

Billing account:
My Billing Account 1

Billing Account ID:
01FFAE-27C15C-7B3496

Project:
Default Gemini Project

Project ID:
gen-lang-client-0724101417

Current Cloud Billing state:

• Cloud Console shows the billing account as a Paid account
• Prepay is enabled
• Prepay balance is ₹500
• No outstanding balance
• The project is linked to this billing account

Current AI Studio state:

• Project shows “Free tier · Prepay”
• AI Studio Billing shows:
“The billing account type is inactive or unsupported.”

Gemini API behavior:

The Gemini API returns HTTP 429:

“Rate limit exceeded for model gemini-3.1-flash-image
(limit: 0 input tokens per minute on Free Tier).”

AI Studio image generation also returns:

“Failed to generate content: permission denied.”
“This model requires a paid API key to use.”

The API key is correctly restricted to Gemini API.

The prepaid balance has already been purchased and is visible in billing.

Please manually review/synchronize the billing tier for project
gen-lang-client-0724101417 and activate the appropriate Paid Tier.

I am not requesting additional credits.

Thank you.