If you're having trouble finding where to redeem your promo code, make sure you are logged out of any existing account.
Then, click or tap on "Buy A Gift"
This should take you to a page where you are prompted to "Buy a Gift" or "Redeem a Gift".
Enter your promo code in the section under "Redeem a Gift" and follow the prompts to sign up with your e-mail address.
If you have a preexisting account, just enter the e-mail address it is listed under.
If you require further assistance, please let us know!