after an iOS upgrade, got locked out at activation lock
I used to have an AppleID which I don't have access to anymore (I think somebody was able to use it as I can't recognise the email address that Apple sent the key code to reset password).
Now, I can not unlock the device (Ipad 2) as the Apple ID used to lock it is the old one. How can I disconnect this device from that Apple ID? I guess that person might have been receiving reactivation pass code over the last few days.
Please help.. Thanks.
iPad 2, iOS 8.2