When you buy Circle from a third party vendor, such as a music store in your city or online via services like Plug-in Boutique, we don't have any information on you. We're looking into developing a solution so that you can easily register your activation code and have it stored in your new FAW account.
In the mean time, please register a new account at the page linked below:
As always, if you have any questions you can always send an email to firstname.lastname@example.org. We're on hand and ready to help!