sms/call forwarding not working on Cyanogenmod

Hi, last month I installed Avast Anti-Theft on my Samsung Galaxy S4 and Galaxy Nexus (both of them stock Android version, not rooted) and everything was working fine.
In order to get the additional features, one week ago, I rooted the Galaxy Nexus, flashing Cyanogenmod 11, then re-installing Avast Antitheft. From that moment on the sms/call forwarding from S4 to GNexus stopped working even if I tried many times to disable an enable it again.
Is there any known incompatibility between Avast Anti-Theft and Cyanogenmod? Any clue to get the feature working again?
Thanks, Cristina