I have only once in 15 years bought Applecare from a third party (Amazon) and when I tried to register it Apple said it was already registered. The seller was (I believe) genuinely puzzled but refunded me without argument.Bumping this thread again. Really nobody has any idea? Anybody have an idea how I can find out? I called Apple, but they seem utterly clueless and don't recommend you buy anything of eBay, only from them. Yeah right.
I am a bit confused about the difference between Applecare and Applecare+That Applecare has been discontinued and does not work with the 2017 models. You will need the Applecare +. No idea about buying it from a third party.