You should ALWAYS scan at the store in 'store mode' to verify MATCH.
If you scan the UPC twice, it should come up with a prompt that asks if you feel like your item should qualify. Follow that through, supplying whatever pics they require. Your offer indicates 'any variety', so hopefully they will add that upc and item to the qualified list and notify you. Then you can submit it for redemption.
There is nothing in the offer terms that mentions it excludes Zero Sugar, correct?