Anti-theft on google nexus 4

Installed avast! mobile security a few days ago (have the phone 5 days) did not install the anti-theft but every time I want to open avast I get “Enter avast! PIN/ Pin Recovery not set”. Uninstalling and reinstalling the app did not solved the problem. The phone is unrooted. My wife has a same phone and apps without that problem. Any help please?

Well, any suggestions how to get rid of the app without root? Thanks for replying.

O.K. I figured up by myself.

Hi Marian - I am facing the same issue with the Nexus 4. Can you please advise how you solved this issue.

Best
Srini