https://discuss.ai.google.dev/t/gemini-disabled-on-antigravity-ide-how-to-restore-access/122177/31
Quite a few issues have come up here.
It's a case where an account was suspended for violating the terms of service, and it seems like Google is blocking it because burning antigravity tokens with openclaw is not Google's intention.
Currently, Kakao's special offer Codex seems to be the best value for money. There's also a 2x usage event going on right now.