My google login was working fine before i published my app on Play Store. But Right after publishing, all the app shows is that Login Error. Please Help!
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I have the same problem. After sending to play store publication authentication does not work
Then i will give you the same link. Just giving that piece of info is not enough.
same error, solved
go to your playstore dashboard, configuration, app integrity and copy the SHA-1.
go to firebase and add the SHA-1 code to the other you already have