Hi guys, I purchased a second-hand Maschine mk3 from a market, and found there are no licence codes with it, no stickers on box, or underneath of the unit. and cant contact the previous owner as I don't know who they are, and so I cant use it. I have emailed Native Instruments with the serial code as is all I had to send. But I have had no reply. So I have an expensive paperweight now. Can anyone help please.