I redeemed a Yemeksepeti Coupon, why is it not working?

The vendor that supplies this reward has added an expiration date, please take note of this date when ordering this item.

Unfortunately, once a reward has been redeemed we are unable to exchange it, refund it, or cancel a pending transaction, so we suggest using this reward as soon as possible.

Effectively immediately Cint will not refund for an expired code.