There could be several reasons why the "Caden Lane" promo code didn't work. It's possible that there are exceptions to the rule for which the code applies. The code might have been deactivated or it may only be used once. Another possibility is that the code was not applied to the order because the amount was not high enough. It's also worth noting that some promo codes are product-specific. For example, a code might work for a certain category of items and not others. If none of these reasons apply, it's recommended to reach out to Caden Lane's customer service for assistance.