05-05-2013 12:02 PM
Hi and Welcome to the Community!
I suggest the following steps, in order, even if they seem redundant to what you have already tried (steps 1 and 2 each should result in a message coming to your BB...please wait for that before proceeding to the next step):
1) Register HRT
2) Delete and Resend Service Books (pre-BB10 devices only)
Hopefully that will get things going again for you! If not, then you should contact your mobile service provider for formal support and to see if you have subscribed to an adequate data plan from them to enable the services you desire.