There was an incident where my Google Play Games Services broke while integrating Google Firebase into my game. Somehow I fixed it by adding SHA-1 fingerprints of both uploading & app signing certificates, but achievements and the leaderboard system still don't work anymore.
The authentication works, and also saved games work. I recently found this stuff from the Google Cloud console, and it seems like calling achievement, and leaderboard API fail 100%.
What should I check to fix this?
