I get this issue today.. this happened because we need to register our package and sha1

I do this on development it's worked but in release mode failed

What happened?

That because we need to use different sha1 for debug and releas

So first

• use web client id not android id

• Even we use web client id we still required to register our app package to oauth client id for type android

• Register two type sha1 for release and development are different

So actually u need to create 3 times

• Web client id

• Android id (release)

• Android id (build) this step is optional if you in release mode this no needed