Question about fake gps app for android

Hey so I've been spoofing a while just not with all this extra protection. Tried to app clone couldn't get it to work for the life of me, so I have a rooted note 4 as a spare phone running 6.0.1 and so I bought fake you from incorporateapps and I love they're product. But I'm using it in root mode, so the app had to be moved to the system apps, and I keep getting a failure to authenticate error. I unrooted my phone so they're shouldn't be any problem with that, does anyone else know what it might be? Thank you kindly.