User becomes null after a while

[poochie89]

I have a maui app and in the class below to perform the Token refresh, but after a while, the user will be null
How can i prevent the app from loosing the User object? Is there something super basic I am missing?
This is on Windows

builder.Services.AddSingleton(new FirebaseAuthClient(new FirebaseAuthConfig()
{

    ApiKey = "*****",
    AuthDomain = AppConfig.FirebaseAuth,
    Providers = new FirebaseAuthProvider[]
    {
        new EmailProvider()
    },
    
    UserRepository = new FileUserRepository("EvolveFootballUser")
}));



    public class FirebaseDatabaseClient
    {
        public FirebaseAuthClient AuthClient { get; set; }
        public FirebaseClient DatabaseClient { get; private set; }
        public UserService UserService { get; set; }


        public FirebaseDatabaseClient(FirebaseAuthClient authClient, UserService userService)
        {
            AuthClient = authClient;
            UserService = userService;

            DatabaseClient = new FirebaseClient(
               AppConfig.FireBaseDatabase,
               new FirebaseOptions
               {
                   AuthTokenAsyncFactory = () => LoginAsync()
               });
        }


        /// <summary>
        /// Retrieves (and refreshes if necessary) the current user's Firebase ID token.
        /// </summary>
        private async Task<string> LoginAsync()
        {
            if (AuthClient.User == null)
                throw new UnauthorizedAccessException("User is not authenticated.");

            // This forces a token refresh if the current one is expired or near expiry.
            var token = await AuthClient.User.GetIdTokenAsync();

            return token;
        }

    }