Basically our issue is described in Apple Technical Q&A QA1766:
https://developer.apple.com/library/ios/qa/qa1766/_index.html
After playing a video ad, users who click “install” button are redirected to app store app and our app goes to background, at this point our app crashes with: libGPUSupportMercury.dylib : gpus_ReturnNotPermittedKillClient
Apple says the reason is that some OpenGL ES commands are being executed while app in background.
The app is released with corona version: 2015.2562
This crash is affecting our users and we can reproduce it, but know idea how to approach it.