Lost root on Cyanogenmod 13 after Factory Reset I am running Cyanogenmod on my Galaxy S2 for about a year.

A few months ago I bought a new phone and game my Galaxy S2 to my mom to use as a second phone. I did a Factory Reset before that. Everything was working fine, including root.

Recently I took the phone back and did a Factory Reset again, but now I lost root access. It is set to "Apps and ADB" in developer options btw.

I tried reinstalling Cyanogenmod, no luck.
Tried flashing recovery (I am using clockworkmod and it worked file all the time), no luck.

EDIT
I tried flashing SuperSU .zip file and after a few attempts it worked. No idea what was the problem, but it is fixed now.