Sign in with Google on Android (Expo - React Native) always returns developer error

When attempting to sign in with Google on an Android device, I encounter the error „DEVELOPER_ERROR.” Despite following the correct steps and using the necessary code, I am unable to resolve this issue.

Here’s a portion of my code that initiates the sign-in process:

import { GoogleSignin } from '@react-native-google-signin/google-signin';

if (Platform.OS === 'android') {
  GoogleSignin.configure({
    offlineAccess: true,
    webClientId: process.env.EXPO_PUBLIC_GOOGLE_WEB_CLIENT_ID as string,
  });
}

const signInWithGoogle = async () => {
  try {
    const userInfo = await GoogleSignin.signIn();
  } catch(error) {
    console.log(error) // DEVELOPER ERROR HERE
  }
};

app.json file with google sign in plugin and package name:

{
  "expo": {
    "android": {
      "package": "com.something.myapp",
    },
    "plugins": [
      "@react-native-google-signin/google-signin"
    ]
  }
}

I also use automatically managed credentials (with EAS).

To get the SHA1 fingerprint I run eas credentials, select Android, then development. This is what I later paste in the Google project oauth client.

Fake fingerprint looks like so:

SHA1 Fingerprint 11:00:22:EE:11:31:9F:80:3E:AA:80:3A:1D:AA:13:BE:3B:00:00:00

As for the Google project:

• I configured the oauth consent screen
  • I added 3 non-sensitive scopes: email, profile and openid
  • I set the user type to External
  • I also added the google account I am using to test the sign in feature to test users
• I added 2 OAuth 2.0 Client IDs
  • One for Android, where i pasted the SHA1 fingerprint generated by expo and package name from app.json
  • The other one for web (I use that client id in the .configure() call)

I am also using Supabase, but can't get the token to even start the sign in with id token process.

I attempted to incorporate OAuth 2.0 Client IDs for each Expo environment (along with its corresponding SHA1 fingerprint) and even tried adding one from the local ~/.android file. However, I couldn’t find a single comprehensive tutorial that would guide me through the entire process, from the initial setup to the final implementation.

I assume I am doing something wrong in the GCP, but I don't know for sure.

Source: View source