I wanted to update an app I already published in the playstore to add achievements and leaderboard.
I have created the game in the Developer Console and everything was fine, everything worked with the debug SHA1 I have entered in the Google API for my app.
But now I have generated a signed APK with a different SHA1 (of course), and I have changed the debug SHA1 in Google API with the SHA1 for my signed APK.
I have pushed the APK to the playstore and published the game from the Developer Console. But now that my game is available in the store, when people try to connect to the Google Play Games they get "Failed to Sign in. Please check you network connection and try again".
I already looked at this link but I am doing everything correctly.
Is it possible that I need to wait several hours before Google API handle the new SHA1 I have entered ? I have no idea of what is going on
Ok so for everyone having the same problem as me.
Don't forget that now Google can sign your app.
The SHA1 fingerprint i needed was in the developer console, no need to get the SHA1 fingerprint of my APK.