As noted in App Cloner and on appcloner.app, Google account sign-in does not work in cloned apps.
Google logins are handled through Google Play Services. During the sign-in process, Google verifies that the app’s package name and signing certificate match the credentials configured by the original app developer, such as the API key or OAuth client configuration.
When an app is cloned, the APK must be signed with a new private key. This changes the app’s signing certificate, so it no longer matches the certificate expected by Google’s authentication system. As a result, Google Play Services rejects the login request. This is a security mechanism enforced by Google and cannot generally be bypassed by App Cloner.
If the app or game offers another login method, such as Facebook, X, email, SMS or username/password login, please use one of those alternatives instead.
However, many apps rely on Firebase Authentication for login. Using the Firebase authentication option you can replace Google and other sign-in methods with a simple email/password form.
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