The issue was, it barely worked at all. Once it did work, you did get a Hotspot login etc. and you could see details on connectivity (and when was weak, how far you were from getting it etc). But, this was different - the entire hotspot was down, not even omitting a Wifi signal.

I emailed T-Mo; they're refunding me for the inconvenience.

Yes, to the OP who mentioned I didn't pay AA - you're right. And, I didn't assume I was. But, AA partner to offer (and promote it) as part of their service. That's like saying it is nothing to do with AA that the bag of nuts I bought from them for $3 was empty. *shrug*