I like the red envelope, it looks cool but I believe it would be better to use a different red because this one looks like the Red Diploma from the Soviet Union. As I see, I get free credits on every envelope purchase. How can I use those free credits? Also consider that your How It Works page is empty and you need to fill it with content. To be fair with you, I wouldn't generate keys on your website, I would download the PDF and change the QR code with my keys in Photoshop.

Btw I wish you good luck. Those songs in the footer were unexpected and funny to hear.