Although Capital One Shopping has various promo codes to test, sometimes the code may not always update your cart balance.
Some possibilities for this are:
- The promo code(s) was already applied
- The promo code(s) has expired
- The merchant may be running a sale or promotion where a promo code was not needed
- Capital One Shopping may have misdetected savings
- The promo code(s) may only apply to certain products, see merchant’s site for more details