iCloud registration
How do I remove unknown Apple ID from iPad
iPad Air 2 Wi-Fi
User profile for user:
jeremy_v
User level:
Community Specialist
Hello Bis4.
Thanks for reaching out to Apple Support Communities. We see that you need help signing out of an unknown iCloud account on your iPad. We will be glad to assist.
Are you the original owner of the iPad or did you let some else use the iPad to sign in with their iCloud account. If yes, then you will need the iCloud account owner to sign out of their account.
Check out these resources:
What to do before you sell, give away, or trade in your iPhone, iPad, or iPod touch
Cheers.