Sole owner account stuck after an approved appeal: how can we restore access to our suspended project?

Hello,

Our Google Cloud / Firebase project was suspended on Sep 28 because its only owner account was disabled. All services in the project stopped (Firebase Auth, FCM and service accounts fail with “account not found”).

The appeal for the owner account was approved on Sep 29. However, we can’t complete the sign-in: after the passkey step, the SMS verification step shows “Too many failed attempts” without sending any SMS, and account recovery ends with the same error. So the project remains suspended.

Our questions:

  1. Is there any supported way to restore access to a suspended project, or add a new owner, when the only owner can’t sign in?
  2. Does the project stay suspended until the owner signs in, or is it restored automatically once the account is reactivated?
  3. Has anyone solved this situation, and which support channel worked for you?

Any guidance would be appreciated. Thank you.