Confirm a unconfirmed user with Amazon Web Services after account creation (in app)

I had an awful issue in AWS where if you create a user account, leave the app, and go back in to confirm it using the code sent to email/SMS, then it will say that the username that you entered must be >1 character and it must follow some pattern. This is a bug in the sample code that amazon posted as well. I am posting here because there was no literature on the topic and I want to post my solution that worked because it was a very frustrating problem.