Turn your device on and off and perform a soft reset.
INSTRUCTIONS & INFO
To turn iPad on, press and hold the Sleep/Wake button until the Apple logo appears.
To turn iPad off, press and hold the Sleep/Wake button until the red slider appears, then touch and drag the slider from left to right.
To lock iPad, press the Sleep/Wake button. Note: iPad locks automatically if you don't touch the screen for a minute or so. To adjust the timing, go to Settings > General > Auto-Lock. To set a passcode lock go to Settings > Passcode.
To unlock iPad, press either the Sleep/Wake or Home button, then drag the slider from left to right.
If your device stops responding, you can reset it by pressing and holding both the Sleep/Wake and Home buttons for at least ten seconds, until the Apple logo appears. Note: If your device continues to not respond or does not turn on click here to learn what to do.