Just bought a Kontrol S88 MK3, from a large chain store. It is guaranteed brand new, however when I go to register it in Native Access, it's informing me that the serial number is currently already registered. I created a ticket a few days ago, included in the ticket the original receipt, a picture of the serial on the device, and the card that came with it. I haven't heard anything from support yet.
Most frustrating! I paid a lot of money for this and that I can't use it other than a generic midi controller is very upsetting.
Not leaving a good taste in my mouth NI.