Crashes

Loaded i0S on my 4S and the app comes up and then flashes the pano bike opening screen and then goes blank and then goes back to the home screen. Please fix the app it worked great before the iOS up grade. 9-21-2015 got new update and app still crashes on my 6+ and 4S. Please fix this I can not use you app.

eei2800 about PanoBike