[Question] Root Help topic

Hello Everyone, few days ago I rooted my device, Then I decided to check if it is rooted or not. So I downloaded root checker and It Says, "Sorry Root access isn't installed properly in this device". While I am able to use other rooted apps like nobloat, adblock, etc.. but having problems in installing Xposed firmwork and renaming etc/install-recovery.sh into etc/install-recovery.sh.bak..
What should I do? And is my device rooted or not? :(