I'm writing an app that uses Family Control. Most of the functionality has already been debugged, including in the call try deviceActivityCenter.startMonitoring(activityName, during: schedule, events: [ eventName: event ]) Works fine on my IOS17 device, but on my old IOS16 device I found that it can't be called, like intervalDidStart, intervalDidEnd, eventDidReachThreshold etc can't be called. I checked some information, https://forums.developer.apple.com/forums/thread/724243 delete the Build Settings mentioned in this link, and change the ios Deployment Target to ios16, and found that it didn't work. Don't know where the problem is?