Doubt About Root Access

Feb 23, 2016
Hi all,
I am a new Xiaomi user, I just bought a mi4c.
I have the last developer rom installed, but i have a doubt with the root access.
When I enter security settings, the root access seems to be abled, because i can see it (despite of the first rom the mobile had), but when I try to run an app like titanium backup, it doesn't have permission and I cannot give them! They just don't appear on the root menu.

If i have to flash something else, please give me a clue because I am a bit lost :p