Your last case number is 121356. It has been closed because it is a duplicate of the case 121354 which was posted the same day about 2 hours before the 121356. These cases were opened using the e-mail address "registration-inquiry@arturia.com". As expected, the case 121354 has been closed because David answered you 4 jan. 2013. You should have received a mail so you could search in your mail application for the string "121354" or "registration-inquiry@arturia.com".
If you don't find this mail, just send to "registration-inquiry@arturia.com" a mail with a subject containing the text "(case 121354)", this will automatically reopen the case.