Scanner sucks. It won't recognize barcodes even when the item is correct and literally the exact same item. I think they do this on purpose to slow you down. There's not even an option to report the error. There should be a button to report the error and submit pictures of the item and the correct barcode so it can be updated. Since this isn't an option I can only assume it's because they really don't care if it works so they don't have to dole out rewards.