Does anti-theft block superuser

I wanted to know if avast anti-theft blocked the superuser access after a sim card change. Once I changed my sim card the superuser did not function anymore. If this is the case can I stop this from happening. I even listed the sim card as trusted, but this does not solve the problem.

Is there a bug in avast anti-theft? As when you change the sim card it lists it as untrusted, and then when you go to the website and state the phone has been found, even though the sim card canges from untrusted to trusted it does not allow the superuser app to function on the phone. The only solution seems to be to uninstall the avast anti-theft app before you decide to change the sim card. Then when you change the sim card and reinstall the avast anti-theft app the superuser app works perfectly.