When I run CreateUserWithEmailAndPasswordAsync() the task returns as IsCompleted and the FirebaseUser is also not null, but the UserID and email are null/empty. I can see the new user (with UserID) in the firebase console.

The same thing happens when trying to SignInWithEmailAndPasswordAsync() with the newly created User. But when I SignInWithEmailAndPasswordAsync() with an older user account everything works fine.

It's strange because it is the same code I used a year ago. In the mean time I did update the Firebase SDK to 7.0.2. Could that be the cause of the issue?

Here is my code for creating a new user:

public static async Task<CallbackMessage> RegisterNewUser(string email, string password)
        {
            CallbackMessage callback = new CallbackMessage();
            callback.isSuccess = false;

            if (!await DatabaseManager.CheckConnection())
            {
                callback.notConnected = true;
                return callback;
            }

            return await auth.CreateUserWithEmailAndPasswordAsync(email, password).ContinueWith(task =>
            {
                if (task.IsCanceled)
                {
                    callback.errorMessage = "Create User was canceled";
                }
                else if (task.IsFaulted)
                {
                    callback.errorMessage = GetErrorMessage(task.Exception);
                }
                else if (task.IsCompleted)
                {
                    FirebaseUser newUser = task.Result;
                    Debug.Log("User created succesfully! userID: " + newUser.UserId);
                    callback.userID = newUser.UserId;
                    callback.email = newUser.Email;
                    callback.isSuccess = true;
                }

                CleanTask(task);
                return callback;
            });
        }

Could really use a nudge in the right direction on this one :)