Autosurf-uk already has a coupon system built in, that allows each user to be given their own use once coupon code. We would like when creating coupons to have the choice, between the single use coupons we currently have and a coupon that has an expiry on it, so it can be released in an offer. So a coupon for say 5000 credits can be claimed once per customer for a week. Then can no longer be claimed the coupon however must still be ONE CLAIM PER USER.
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