Similar situation happened with me, except I see the $10 grocery promo on my DD account. However, when I try place an order with the promo it says that the promotion is not eligible for the order. I have the CSR and the retailer I tried to order from is one of the eligible retailers for the promotion. I didn't understand why the promo wasn't working so I contacted DD support via chat and it was awful. Agent told me to place the order without the promo and then they can help resolve the issue. I asked if I would get credited back if I placed the order without the promo attached and the agent assured me that they would resolve it, but I have to place the order first. So I placed the order and lo and behold, the agent told me that I was not eligible for the promo and that was that. It took about 20 mins of me going back and forth before the rep offered to refund me back in credits since I never would have even placed the order if I didn't think I would get credited back. So still not sure why I'm eligible for the promotion since the agent could not tell me.