Was this coupon a Bitcointalk exclusive coupon? Sadly, I read your post today, clicked on claim now button and I was late to use this coupon.
This coupon is available for all users who are also sent via email but to claim it at least your account level is silver and yeah they sent this coupon 2 times $5 and $8 if you see the BITCOIN price reaching $100k, maybe they will send another coupon, just wait in your email.
Admin not focus on this forum so he only posts a few while other users are not active because there are no campaigns or event, just try to contact the admin who knows he needs you to manage this thread. I don't know how they reach new users because they are not active in promos and ads while new competitors come almost every month, I rarely play here because I have other favorite sites and the marketing team should realize this.