Registering question

I have updated my C5 to C6

I have activated my license - so far so good
Now, I like to register my software=C6, but I just do not see how to do it on gives an error:
Seite wurde nicht gefunden (404 Fehler)

SO, what is wrong?

The site could not be found. That’s what it sais.
You have to register @ mysteinberg on the site.

Hi Renee,
Thanks for you replay,
My registration is OK.