Lucky Day Gift Cards

I live in the UK and i have over 20 Mil Coins in Lucky Day. The gift cards are never stocked i check back every half hour and there are rarely ever gift cards and when there is it's Starbucks. When I got fed up of waiting I decided to get a Starbyck Card but it said that there was an error. Has anyone redeemed a gift card in the UK and if so how? :D