Unable to create an account – What's Up? A Mental Health App Review

The app seemed good, but every time I tried to post something in the forum it would say I needed a valid account. I’ve been trying to create an account by filling in the username section, email address, etc, but when I hit the create button it just gives me an alert message. It won’t create an account for me.
Review by [Drea4] on What's Up? A Mental Health App.