Stolen Tablet: How easy is it to just Reformat/wipe tablet and disable AVAST AT?

Had my Samsung Tab stolen which was running MS and AT - unrooted. Got a few location hits the first hour then nothing - i assume they turned it off. I DID get a chance to mark it as LOST and Wipe it remotely which it confirmed:
My questions: did wiping the tablet also disable AT? If not, why did i receive no further communication - it has been a week. The web panel has the same info as when it was stolen - all is functioning - so i assume there has been no communication between the tablet and the Avast website - and have assumed they were clever enough to remove the program somehow. :-
I have not received any messages and was at least hoping for a notice of a changed SIM, etc.
Please let me know if this is likely the case and i have lost my tablet for good… or what are my options…?
Regards,
SN