Not useable..

This app is not useable on my iPhone. It prompts me to create a username and password for my business account, allows me to identify myself with my secret question, but then the part of the screen that is for creating the username and password are cut off.
This is my first bill that Im attempting to pay. I hope I have better luck paying online using my computer when I get home later.

Lannnie about My Sprint Mobile, v5.7.0