I removed country restrictions, so you can no try to place an order from your country. Keep in mind that store is working from 12.00pm to 2.00am Greek time.
The problem is today, there were 6 orders and it worked only once… It works occasonaly.
Coupon settings are here:
20% off ONLY for the first order of each customer/visitor (without any other limitation) Subscriber user role is excluded. All other roles are allowed.