Why doesn't my promotional code work on Camper.com?

Your code might not be working for one of these reasons:
•The code has expired. Check the expiration date of the promotion.
•The promotion doesn’t apply to any of the items in your cart.
•The code has already been used. Promo codes usually have a one-time use.
•You’re trying to use more than one promo code. Only one is allowed per transaction.