iOS 10 killed my tracker app

It just doesnt work since the iOS upgrade. I had the paid version, which honestly wasnt really worth it as it worked no better than the free version. Had to delete it and download again - but I dont have the confirmation codes any longer for my paid version, and am back to the free one. Although it simply freezes on the first screen now and wont go any further --not working at all. Bummer.

Kj88008 about GPS TRACKER:Real-time tracking, v7.5