Yikes, magenta3102227, a week without this functionality working is too long -- let alone a year! This is the kind of issue we'd need to review your account to troubleshoot completely, and then file a ticket for with our web team if the error message isn't something we can narrow down on our own. Please Contact Us when you have a moment so that we can look into this for you!
I have had problems paying my bill online since 2015!!!! I have talked at length with customer service who assured me they would fix the problem. I sent multiple messages and now I can't get the message function to work. I'm putting this in writing because having to call TMobile on a monthly basis is ridiculous. I'm not signing up again for automatic payments because it only let me ignore the initial problem for another year. The problem is my payment screen lasts for 3 seconds before booting me back to the screen with all of the promises of how easy it is to pay online.