Count me among the frustrated! My future use for UM (post CallBackWorld) was to be UM to UM calls and the occasional "I'm fine" call back the the states from Belgium or Netherlands (have local SIMs for other places I travel). So the cheaper rates and a UK number seemed a perfect fit. So I upgraded my +432 and ordered another UM+ a couple days later.
The upgraded number registers on AT&T and balance inquires work, but I cannot send or receive SMS's or calls. ( Calls get an American "invalid number" message even though phone is on) If I try to send an SMS I get "SIM not activated" (it was)
The 2nd SIM came this week and today I put it in phone and it can send SMS and make and receive calls, even though I wasn't able to activate it on the web (says already activated). Of course, its the first day so I expect to to stop working tomorrow
I'll called UM+ CS using Voipbuster (.10/minute) and after 4 min on hold I got "can't answer, goodbye" Send email but from reading here I don't expect a response. I was always happy with UM CS the few times I need to call them, but this is ridiculous.
I sure hope they get this fixed soon. I'm off to Europe in a couple weeks -- luckily the first week is in Germany (Bamberg) where my dad and I both have local SIMS. But after that we'll need the UM+ to stay in touch.