The scratch of coupons that you are taking about are they the ones that you recieve in the mail?
A few months ago I had signed up at the store and had not recieved that flyers as of yet. So a couple weeks ago I was there and signed up again. Hopefully this time I still start getting their flyers and coupons. I guess I have about 4 moere weeks to go. They say it takes about 6 weeks.