Perform a forced restart of your iPad, as this will often resolve unusual or isolated issues:
- On an iPad with a Home button: Press and hold the top button and the Home button at the same time. When the Apple logo appears, release both buttons.
- On other iPad models: Press and quickly release the volume up button, press and quickly release the volume down button, then press and hold the top button. When the Apple logo appears, release the button.
After restarting, should the problem persist, retry prioritising one of the pending App downloads.