There are several potential reasons why your promo code might not have been successful:
1. The code may not be valid for the items you've selected. Some promo codes are specific to certain products, so they might work for sandals but not for sneakers, for instance.
2. The code might require a minimum cart value to be eligible. Certain promos are only applicable once you reach a certain spending threshold.
3. The item you're interested in may already be on sale. In many cases, discount codes cannot be combined with items that are already discounted.
4. The code could be expired. Like all coupons, promo codes have expiration dates. While we strive to keep track of expired coupons, it's possible for some to slip through the cracks. If you encounter an expired code, please let us know, and we'll address it promptly.