Hi Musicwik,
Open your PHP.ini file located in WHM easily by typing in the Search box php.ini. Edit PHP.ini and click Advance > find here "Disable_function". copy/cut all functions from the field. save it and then check.
Basically this module use some PHP special function which actually considering security risk so that is why its not detected.
once you satisfy that all is showing fine you can just redo he changes so your system will keep prevent danger PHP functions.
hope it helps peoples who looking for this.
