last time i successfully get the starbucks voucher, on next day when i was at starbucks, i clicked the voucher again it shown fully redeemed, WTF i thought get the voucher should have but you get voucher dont mean u will able to redeem

the voucher is already in "My Deal", when i was at merchant and clicked redeem it shown all quota redeem, i mean that even you successfully get the voucher, it dont mean you go to merchant have enough quantity for you to redeem