To redeem a promo code, tap the Wallet 
icon in the top right corner (the gold coin icon with a number next to it), then:
icon in the top right corner (the gold coin icon with a number next to it), then:- Tap "Promo Code" in the top right corner
- Enter the Promo Code number and 3-digit CVD number
- Tap "Redeem" in the top right corner
The credits from the promo code will be deposited into your account balance, and you'll see a "Promo Code successfully redeemed!" message appear at the bottom of the screen.
NOTE: If you receive an error redeeming the code, please check for an expiration date printed on your promo card or the email where you received your code. Most promotional codes are only available for a limited time.