After Haagen-Dazs moon cake coupons are lost, they cannot be retrieved or reissued. Mooncake coupons are time-sensitive. If they are lost or expired, they can't be used again.

However, if you save the photo or electronic version of the mooncake coupon, you can try to take it with you to the Haagen-Dazs store, and the store staff may help you exchange mooncakes after verifying the information. It is suggested to contact Haagen-Dazs customer service in advance to confirm whether this operation can be done.

It is suggested that in future consumption activities, all consumption vouchers should be kept as well as possible to avoid unnecessary troubles caused by loss.