I have Avast Premium on my Win7 Ult 64bit PC and Avast Mobile Premium on my Samsung GS3.
When I look in <My Devices> on the PC install, it says my mobile is secure but has a message reading "Your license is inactive" and says I should "Purchase avast! Mobile Premium to use the full package", which I already have.
Anti-Theft (Root) is fully installed and configured on the GS3, with no 'Issues' (and no ignored or hidden issues).
I've logged off/on Avast to see if this would make a difference, but it didn't.
Any ideas?