Quick answer: Most coupon failures come from eligibility, product exclusions, minimum-spend calculations, account limits or expiration.
Confirm the code and date
Copy the code without extra spaces and check the promotion’s time zone. Some codes end at a specific hour or after a redemption limit is reached. A third-party page may continue showing an expired code.
Check the eligible basket
Minimum spend may exclude tax, delivery, gift cards or certain categories. The requirement can be calculated after other discounts. Remove excluded products or test the eligible item separately to identify the conflict.
Review account rules
New-user codes may depend on phone number, device, payment instrument, address or household history rather than a newly created email alone. One-use and monthly limits can apply across related transactions.
Check the payment method
Some promotions appear only after selecting the required bank, card type, wallet or installment plan. Verify that fees do not offset the benefit. Never share authorization credentials with someone offering to apply a code manually.
When to stop troubleshooting
If the official terms no longer show the offer or checkout rejects an eligible basket, do not keep placing and cancelling orders. Capture the error and ask official support whether the promotion remains available. Compare the normal price elsewhere before spending more time.