Hello, kathleenfromsc.
To start off with, check this article to make sure the steps for using Airplay between your Apple TV and iPad are being followed: Use AirPlay to stream audio and video on Apple TV - Apple Support.
If that does not help, try ending the screen sharing session and restarting the iPad (Restart your iPad - Apple Support), then restart the session. This may help to straighten out the devices.
Let us know if we can help with anything else at all or if this doesn't settle your issue so we can look into this further with you. Thanks and have a fabulous day!