We’re so sorry to hear you're experiencing issues applying a promotional code. Some of our promotional codes have manufacturer exclusions, which are always listed in the details link associated with the promo. In other cases, the promo code you're trying to use might be conflicting with unused promos still attached to your account. If this didn't answer your question, please visit www.SmartPak.com/ContactUs to start a live chat, or call us at 1-800-461-8898. For a list of current promotions, please visit our coupons and promotions page.