This app is GARBAGE. It has barely worked over the last 5 years whenever I randomly need to use it for some reason. Now tmobile is forcing me to change old passwords for "security" and I can't use old ones, so I have to add something random which I won't remember. STUPID I.T. CHOICE. I finally logged on and then it kept crashing... so I just gave up. I'm done trying and wasting my time. Now I have to pay MY OWN BILL through guest pay. Pathetic.