Restart Your iPad
Believe it or not, turning off and back on a device actually works. It helps your iPad get rid of anything lurking memory that might cause it to run slower than usual.
To restart your iPad, you’ll need to press and hold the button at the top and one of the volume buttons at the same time. Then, drag the slider that will appear on your screen to turn off your iPad.
To turn it back on, all you need to do is press and hold the button at the top of your iPad for a few moments until the Apple logo appears.
Unlock your iPad and see if that fixes the issue.