How do you recover an expired coverage iPad

Are you asking if you can purchase AppleCare+ for this device?

You can only do so if it's been less than 30 days since coverage expired. Details here: Extend your AppleCare+ coverage - Apple Support

~Lyssa

I have an old iPad air iOS 15.8. I am unable to remove my. Information and do Factory Setup so it can be given to some kiid

An old iPad Air 15.8 iOS. Want to remove all my information from it before I give it away.

You may wish to start with this link:

What to do before you sell, give away, or trade in your iPhone or iPad - Apple Support