I have created a ticket at http://www.nero.com in their support (which you will find at the bottom of the page) about the activation code.
Hopefully they will respond and let me know about this.
The license key that worked for me was: 10EC-80A6-6T9U-A7EX-L8ET-XC37-2X41-A847
Maybe some others can try this and see if it works for them.