Clock help with superuser

Hi guys. Ive had root for about a while, and after a while the notifications annoyed me so i disabeld the Superuser function. Since then i never could activate the Superuser "function" again. There was a filter for superuser in the settings but now its gone. Ive used rootchecker and it tells me that im unrooted. But ive only disabled superuser so i know that im "rooted". Need some help