User of Firebase Auth here - got the same message and was similarly confused. Good to know I'm not the only one, but hope this gets resolved somehow. When Google was bragging about 30% of their code being AI-generated, the client ID gathering must've been part of that...

Also got this message for a client ID that's definitely being used in prod. Are you able to link the Reddit thread?

Google Cloud support is an actual joke. I have no idea how to navigate their chatbot and speak to an actual human. Awful.

I got a corrected email today with less clients.

We got and update from somebody at firebase on reddit and they confirmed it was marked incorrectly: https://www.reddit.com/r/Firebase/comments/1ky75x3/comment/m...

Now you can also see the warning for specific keys in the google cloud UI (and that one seems correct)

Same here.. 1 Production apps, sign-ins occurring frequently. They only freaked out every Dev in the world..

Same here. Received it for 3 production apps with regular traffic going through Oauth. No idea how to "use them" while they're already in use.