How to I disable iTunes Match on a device I no longer have access to?
I had signed into my iTunes account on someone's computer to access my music in the past. I no longer see or talk to the owner of said computer, but I think their iTunes is still somehow linked to my account.
I often see new music and audio recordings (from the computer I no longer have access to) added to my music library and I know they are not from me. This is rather frustrating for someone who likes to keep their iTunes library meticulously organized. I have tried to ask them to sign out of my account with no avail. When I go to my iTunes account to Manage Devices, it only shows my own devices. It also says that only one computer is authorized to play content from my account. So how is it that they are still adding content into my library?
Is there anything I can do on my end?
Please help >.<