Presonus Faderport V2

I suspect that my compatriots have had me, a couple of days ago I picked up a fader from the post office that was three months old, firstly, there were only three rubber feet, secondly, I can’t register it on the website as my device because according to its serial number it is considered to have already been registered by someone, how can I find out who this person is and who to ask,???