[iOS] Game stops launching after period of time and stay "freezed" in background

I have a problem with currently developed application. I deploy it into iOS device and everything works fine at the beginning. After few hours, day or two, application starts behaving like on attached video. I’m using plugins like: Heyzap, Pollfish and Unity Native’s Gamecenter, IAPs and Analytics. Have anyone had similar problem yet? Is there any way to get app logs in such situation?

Video

Build Configuration (using Unity 5.3.6p1)

hey @Pashka3993 ,
Could you file a bug report with a repro project and post the case number here. Which version of Unity are you using? Which version of iOS/Xcode/macOS etc? Have you tried removing certain plugins to narrow down the cause? You can go into Organizer with Xcode, select your device, and check crash logs. If you run the app from xcode you can see the console output through xcode.
Cheers,
Chris