Billing conflict — prepaid + postpaid on the same account, project stuck in the free tier

Hello. My billing account 01C2B0-216B65-C76E.. appears twice: once as “Cloud Prepay” (balance of R$ 60) and another as postpaid “Google Cloud” (with a registered card). Because of this conflict, AI Studio shows “Error during billing setup” and my project remains on the free tier, returning a 429 error (generate_content_free_tier_requests, limit 20). Please perform a manual synchronization / fix the conflict between prepaid and postpaid so that my project can use the paid tier.

  • Project: gen-lang-client-08919201.. (Default Gemini Project)
  • Billing account: 01C2B0-216B65-C76E..
  • Prepaid balance: R$ 60 (added on July 14)
  • Postpaid also active (Mastercard …2847)
  • Error: 429 “Quota exceeded for metric: generate_content_free_tier_requests, limit: 20”