When I pulled the voucher up on my iphone an alert came up and said are you sure you want to use this voucher. I had never had this before and as I wanted to use it I answered yes and then it said used and I no longer had the voucher to use!! The bakery was very nice and went to a lot of trouble to find the list and believed me I had not used the voucher even though it said I had. You need to fix this application. The bakery was great, terrific food.