Reply to S4 Scratch Upgrade

Hey all, I have traktor pro 2 i'm trying to upgrade to scratch, i have a djm 900 and bought the s4 scratch upgrade kit but I cant get it to work. It comes back with

"You have tried to activate an update, upgrade or crossgrade, but your User Account does not contain the full product license that this update, upgrade or crossgrade license is based on. Possibly this full product license is assigned to another User Account that you may have created using a different e-mail address. Please contact the Native Instruments Registration Support and submit the serial number in question."

Any suggestions or did I just waste my money