I was able to apply the 100% coupon by when I move to step to I got this message "Sorry, but we're facing some technical problems right now...". This message is seen exactly for the 2-3 minutes when the coupon seems to be valid, after which the number of redeemtion exceeded message come. see the attached image.
Later on only the 10% coupons ate still valid.
I tried this 2 time but same problem so I am doubting it to be a bogus deal.
