Calibrate button doesn't work

I was in my A318 today and after pushback, I saw that the plane is not calibrated correctly. But no matter what I done, I couldn’t calibrate the device. This has previously happened to me in an A321

Need device and OS please.

Umm… Re-install the app, I have paid 100$ on Stuff. By the way it was fixed when I quited flight and went on another flight.

An Ipad air 2
iOS 9.2

Reinstalling won’t affect your in-app purchases. It is all saved on to your Apple ID or Playstore account. When you reinstall it, you can your stuff back for free.