Start 11 can't register license keys

Hi, I can't register my start 11 key for new installs. 

I have a 5 pack, was using 5, and upgraded two PCs so removed two PCs from the installed list.

However, I think the problem may be around creating an account to do this, I got confused and updated my nickname to my email address while making an account, but now I can't change the nickname it says to contact support, which I did and got an email back saying use the forum, hence this post. 

can anyone help?  

Cheers

Doug