iOS YouTube App Crashes in iOS 9
Whenever you try to open the YouTube app for iOS on your iPhone or iPad, it quickly goes back to the home screen.
In short, the YouTube app crashes. This is visible on iOS 9 beta firmware as reported by several iOS developers.
YouTube app hasn’t been updated for iOS 9, so the first thing you have to do to fix this crashing problem? Is to look for the latest update in the App Store.
Next, close the YouTube app (by double-tapping the home screen and swiping up).
Or you can reboot the iPhone or iPad in which the YouTube app crashes.
These are some of the common solutions. They may or may not work for you depending on the app version you have and the iOS you are using.