Hi
If you registered for an account on the site before purchasing the extension, please login to your account and access to Your Orders menu item under user menu to download the extension .
If you registered for an account after purchasing the extension and don't see the order under your account, please submit a support ticket contains the email you used to purchase the extension and Paypal transaction ID . I will check the order and assign it to your account so that you can download future releases for free .
Thanks ,
Tuan