When I run my app from Xcode 12.0 on an iPhone 8 (iOS 14.0) I get the error: iPhone is not available. Please reconnect the device. I've tried restarting Xcode and unpairing the iPhone from Xcode, but nothing seems to work. The app works fine on the simulator.

When adding a language to a new leaderboard to an app in App Store Connect, the view isn't responsive. It's impossible to enter anything in the text fields or choose from the dropdown menus.