If your iPad displays a disabled screen stating "iPad is disabled connect to iTunes," it appears that you forgot your iPad passcode and were locked out after entering the wrong passcode too many times ...

“I got an old iPad from auction only to find out later on that it has Activation Lock enabled. If I don’t know previous owner’s passcode nor have any way to contact them, how can I bypass Activation ...

Factory reset didn't remove iCloud Activation Lock? Learn why it happens and how to unlock your iPhone safely with official methods.