Use the Themeforest contact form to get a forum account
To get an account use the contact form on the vfxdude Themeforest user page (on the right sidebar under "Email vfxdude". You must be logged in to Themeforest with the user that purchased the theme). The forum account will be manually created and you will get an email with the username and password. The Themeforest username will be used if not another is requested.
Open registration was closed due to an increased amount of spam (there was 15000 spam users registered).