I updated my iPad Pro yesterday to iOS 9.2, and my Apple Pencil no longer works. Bluetooth doesn't pick it up, and when I plug the pencil into the iPad I get a "This cable or accessory is not certified and may not work reliably with this iPad"-message... Is there any way to reset the pencil or something? I've checked the connection on the pencil, it's not damaged and can't really figure out what the issue is. It was working fine before the update. Thank you!