You can use a HD Pass to export a video for free in HD 720p & full duration. When you sign up to Stupeflix, you get 1 HD Pass. You can earn more HD Passes by inviting your friends to join Stupeflix. If you have a free account and are out of HD Passes, you need to subscribe to a plan to keep exporting videos.
The best way to get more HD Passes is to invite friends to join Stupeflix. You can send invitations via email, Facebook or Twitter. When people sign up to Stupeflix using your referral link, they will get a extra HD Pass, and you will get a HD Pass for every person who signs up: everybody wins!
When you send invitations to friends to join Stupeflix, you and your friend will get an extra HD Pass if and when your friend signs up. When a friend signs up to Stupeflix from your invitation, we will send you an email to let you know you won a HD Pass. If you send invitations but nobody signs up, you will not get HD Passes: tell your friends they're missing out!
If your friend signed up without using the referral link of your invitation, then we weren't able to link their account to your invitation, and consequently neither you or (s)he got the extra HD Pass.