My guess is it's some other issue with coupons.com. It doesn't seem tp be an overall problem or more people would be posting in agreement with not getting points. Within the past few months the only time I didn't get my points was when I printed on the wrong laptop and had to input my #, only 1 of the 50 printed. The other time was when weekend prints were delayed for everyone.
If people aren't responding it's most likely because no one is having the same problem or they didn't print coupons that day. You might have better luck posting on the sb facebook page or on a blog post to get a bigger sample of people that mau be having the same problem.