Hi- I have a Watch App (written in Swift) in the App Store that had been working fine which I had to make some changes to make compatible with Swift 3. The thing that has me pulling out my hair is that in Testflight, the app will quit after showing the UI on the Apple Watch (running WatchOS 3.0) for a 2 to 3 seconds. That never happens in the simulator nor running the same debug build on a real Apple Watch (running WatchOS 3.0). I've tried to get Apple Developer support to help but they said they can only assist with code-level issues.
If anyone has encountered this or has any recommendations I would really appreciate the help!