Same issue here guys..
Purchased the upgrade from X2 Producer to Sonar Platinum.. Cakewalk.com shows me having SONAR X2 Producer, Dimension Pro, n' Reaper registered.. BUT!!! Cakewalk Command Center shows nothing under "Connected Products!"
i have sent several eMails to the support team... but as I'm in Australia i dont get my reply until the next day! They are getting back to me.. but after a day long delay.. So frustrating!
peace out dudes!