Manual billing sync request: 01CF52-0BAD2B-DC4B... — Inactive or unsupported despite active billing account

Billing Account ID: 01CF52-0BAD2B-DC4B..
Project: Default Gemini Project

AI Studio shows “The billing account type is inactive or unsupported”
despite having an active, funded Cloud Billing account (₹1,000 prepay
balance confirmed in Cloud Console). Requesting a manual billing sync
so my API keys unblock from the Free Tier restriction.