Cant deautorise ipad in Itunes

[SamB11]

Hi, I've sold my old ipad mini on ebay. Before I did this i signed out of iCloud and erased the ipad. However when i go in to itunes on my mac and go to manage devices It wont let me remove my old ipad from the authorised list. The option to remove is greyed out, it is also greyed out for all the other authorised devices (new ipad, iphone and mac) Is there anything I can do? Is it ok because I have signed out of icloud and wiped the ipad prior to selling. Thanks

 

[DeltaMac]

There might be other solutions, but in my experience, the quickest is probably to Deauthorize All devices, then re-add the devices/computers that you know you still own and use for AppleID access.