eRegistration: "Invalid serial number"

Hello,

I have SolidWorks 2015 Student Edition installed and i would like to register to the SolidWorks Customer Portal, but it seems that my Serial number is invalid when i try. How can that be? There are no problems with the installation on my computer and it is showing no errors in the Licenses.

Regards,

Jarl

SolidworksEducator Student