Contact the administrator who invited you and request deletion of your CERBBBOT account. Include the email address and Google or Facebook sign-in method you used. Never send a password or access token.
The administrator will verify the request, remove your Firebase Authentication identity and CERBBBOT account record, remove your per-user usage counter, and remove your uploaded setup PDFs and setup records. Backups and soft-deleted storage copies may persist for their configured retention periods. Service logs and data already processed by Google Cloud or OpenAI follow those providers’ retention policies.
You can also remove CERBBBOT from Facebook’s Apps and Websites settings to revoke Facebook access. This does not by itself delete CERBBBOT’s stored account record.