Find My iPad setting prevents restore
Try setting the iPad in recovery mode:

connect the iPad to your computer

turn it completely off

press the power button (top button) for three (3) seconds

without letting go of the power button, press the Home button

keep them pressed for ten (10) seconds

after the ten seconds, let go of the power button without letting go of the Home button

keep pressing the Home button until a message pops in iTunes saying

iTunes has detected a device in recovery mode, you must restore it before you can use it.


restore the iPad


Try doing this a few times if you dont succeed the first time.