private void CheckIfUserExists() { FirebaseService firebaseService = new FirebaseService(); User user = new User() { Id = AccountManager.GetAccountId(), Email = AccountManager.GetAccountMail().Replace('.', ','), Name = AccountManager.GetAccountName(), UrlImage = AccountManager.GetImageURL() }; bool existsUser = firebaseService.CheckUserExists(user).Result; if (!existsUser) { firebaseService.AddUser(user); } }