This may have nothing to do with your issues, but My linked payment at Walmart did the same thing- submitted by the linked card but no offers awarded. I’m wondering if it is an issue they are having with Walmart right now. I already have a ticket open from a few days ago, and when that one gets resolved I plan on opening a ticket for my Walmart trip. I took screen shots of the offers, and photos of the items (front and back) just in they ask for the info.
Thanks! I think I’m going to unlink both cards and try to scan. I just didn’t want to unlink my new card because my online orders are crediting correctly. Good luck!