Take a look at your app's deployment target and make sure you're not using new api features below this target level. For example if you're targeting iOS 13 but using features specific to only iOS 15 only meant for iOS 15 and you're not testing on an iOS 13 device. Those type of scenarios. But looking at the report above you are having an issue with your main storyboard file.

Please check all story boards resources.

If you have something on that line move it down one line.

Just means your initial view controller is failing to initialize properly and hence this relationship is nil. window.rootViewController = viewController Check your storyboard connections, check the target main window is also referring to the main storyboard, check the connections in the storyboard, etc ...

You will also have better luck contacting the developer of the game via their own support channels and not here.