I try to install something like SuperSU. All it gives me is
Updating partition details... ...done Full SELinux support is present. Simulating actions... Updating partition details... ...done
I press reboot system as up there it says "Successful".
When I get in the phone there is no SuperSU.
The zip file is ok, I tried it on another phone and it worked well. Nothing on twrp works: no wipe no nothing, it just gives the above again.