Starting with a force restart of your iPad will help you fix problems with it. After that, see whether any iOS updates are available and make sure the screen is clear and free of objects. Should issues still exist, think about resetting all settings or restoring the device. After restart problems, many customers find their iPad's touch screen not working; following techniques can help. https://techdrivesupport.com/blog/top-10-solutions-for-ipad-touch-screen-not-working-after-restart