Dog Stuff at Dollar General

One of the items I went in for, I ended up not getting because they would not take an internet printed coupon. I have never had them refuse a coupon that I can remember. Has anyone else had that happen? It was for $2 off Puppy Chow, from joining their healthy start program. Here's what I did get:

Chef Michael's dog food $4.00 used $3 q (I think it was $3.50 last time I had this coupon)

2 Everpet dog treats $1 ea

Milkbone toy $2

Everpet basted dog bones $3 (these provide lots of chew time!)

2 Freshpet dental bones, 3 pk $1 ea

Cinnamon Rolls $2.50 (these were for me, not the dog, lol)

OOP: $13.49

Saved: $3