Firebase отклоняет подписку новых пользователей

Question

Я работаю с Android Studio и Firebase.Все работало нормально, но какое-то время было невозможно принять нового пользователя в моем приложении.После подтверждения регистрации моя заявка возобновляет процесс регистрации с самого начала.Android Studio возвращает следующую ошибку, хотя с 27 мая 2019 года я ничего не менял:

E/StorageUtil: error getting token java.util.concurrent.ExecutionException: com.google.firebase.internal.api.FirebaseNoSignedInUserException: Please sign in before trying to get a token.

Я пытался обновить правила базы данных следующим образом:

service cloud.firestore {
  match /databases/{database}/documents {
    match /{document=****} {
      allow read, write;
    }
  }
}

Вот мойОсновная активность:

public class MainActivity extends AppCompatActivity implements  ViewPager.OnPageChangeListener,
        OnFragmentInteractionListener, InternetCallbackListener{

FirebaseStorage storage = FirebaseStorage.getInstance();
private GoogleApiClient client;
protected GoogleHelper googleHelper;
private FirebaseAuth mAuth;
private GoogleSignInClient mGoogleSignInClient;

// [...]

@Override
    protected void onCreate(Bundle savedInstanceState) {
        if (!isTaskRoot()) {
            finish();
            return;
        }
        super.onCreate(savedInstanceState);

// Configure Google Sign In
        GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
                .requestIdToken("xxxxxxxxxxxx.apps.googleusercontent.com")
                .requestEmail()
                .build();

        mGoogleSignInClient = GoogleSignIn.getClient(this, gso);
        mAuth = FirebaseAuth.getInstance();

    }

    private void signIn() {
        Intent signInIntent = mGoogleSignInClient.getSignInIntent();
        startActivityForResult(signInIntent, Statics.REQUEST_SIGN_IN);
    }

    private void firebaseAuthWithGoogle(GoogleSignInAccount acct) {
        Log.d(TAG, "firebaseAuthWithGoogle:" + acct.getId());

        AuthCredential credential = GoogleAuthProvider.getCredential(acct.getIdToken(), null);
        mAuth.signInWithCredential(credential)
                .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        if (task.isSuccessful()) {
                            // Sign in success, update UI with the signed-in user's information
                            FirebaseUser user = mAuth.getCurrentUser();
                //            updateUI(user);
                        } else {
                            // If sign in fails, display a message to the user.
                            Log.w(TAG, "signInWithCredential:failure", task.getException());
                        }

                        // ...
                    }
                });
    }

// [...]

@Override
    public void onStart() {
        super.onStart();

// Check if user is signed in (non-null) and update UI accordingly.
        FirebaseUser currentUser = mAuth.getCurrentUser();
        //updateUI(currentUser);


        mAuth.signInAnonymously()
                .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        if (task.isSuccessful()) {
                            // Sign in success, update UI with the signed-in user's information
                            Log.d(TAG, "signInAnonymously:success");
                            FirebaseUser user = mAuth.getCurrentUser();

                        } else {
                            // If sign in fails, display a message to the user.
                            Log.w(TAG, "signInAnonymously:failure", task.getException());
                            Toast.makeText(MainActivity.this, "Authentication failed.",
                                    Toast.LENGTH_SHORT).show();

                        }

                        // ...
                    }
                });

        // ATTENTION: This was auto-generated to implement the App Indexing API.
        // See https://g.co/AppIndexing/AndroidStudio for more information.
        client.connect();
        AppIndex.AppIndexApi.start(client, getIndexApiAction());

        String uuid = Settings.Secure.getString(context.getContentResolver(), Settings.Secure.ANDROID_ID);

        dbHelper2.getUser(uuid, new OnSuccessListener<DocumentSnapshot>() {
            @Override
            public void onSuccess(DocumentSnapshot document) {
                      thisUser = document.getData();

                      if (thisUser == null) {
                          // go to user profile activity to register
                          Intent i = new Intent(context, SubscriptionActivity.class);
                          //i.putExtra("userId", null);
                          context.startActivity(i);
                      }
            }
        });

// [...]

@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        Log.d(TAG, "onResult");
 super.onActivityResult(requestCode, resultCode, data);

        // Result returned from launching the Intent from GoogleSignInApi.getSignInIntent(...);
        if (requestCode == Statics.REQUEST_SIGN_IN) {
            Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
            try {
                // Google Sign In was successful, authenticate with Firebase
                GoogleSignInAccount account = task.getResult(ApiException.class);
                firebaseAuthWithGoogle(account);
            } catch (ApiException e) {
                // Google Sign In failed, update UI appropriately
                Log.w(TAG, "Google sign in failed", e);
                // ...
            }
        }

Спасибо за помощь.