I used to have this problem and then Ibotta fixed it and now I no longer do.
For example: I went to Food Lion last night and checked out at 8:30 pm. It was posted by 7:00 am this morning,
Xis I have the same issue But ibotta support informed me that it takes 24-48 hours to post I just bought food on Saturday and did not get credit till Monday morning . eventually you will get your credit
I am hoping my Food Lion rewards show up soon. It's usually quicker than 24 hours but that's about how long it's been now. I fulfilled several offers so should be worth a few dollars.