Well I just tried to submit my receipt and they came back and told me that it doesn't appear that I purchased qualifying products. One item on the receipt is labeled "KIWI WHITEN", the other item "PARADE BLK". The latter being polish and the one I think they took issue with. I just e-mailed them back with a photo of the product that shows the item number from the receipt matching the UPC barcode. Will report what they come back with.

Update: Well, as expected, they came back again that the products were not qualifying. My guess is that they are using some kind of automated process to process these automatically perhaps with OCR vs. human intervention. Looks like I will return the items to Walmart and repurchase a different product.