Received my public mobile SIM card today. Went to go activate it, entered in all my details, etc, but it failed on the final page with an obscure error. Now I can neither log into self serve (although I did get an email saying my account was created), nor can I try activating again (Invalid SIM). I had set up a 90 day plan with talk, text and data but none of this is working. What can I do since I can't log in to my self serve to see what's wrong?