Answer
A voucher code can fail because it has expired, excludes the items in your basket, requires a minimum spend, is limited to certain customers or cannot be combined with another promotion.
Check spelling, letter case and spaces when copying the code. Also confirm whether the promotion applies to sale items, specific brands, first orders, app purchases or selected delivery methods.
What to check before checkout
Read the retailer’s current promotion terms, confirm that the code applies to the items in your basket, and make sure the expected saving appears before you pay.