Sku Not Working?

When I search for the example sku ‘CBTN660J’, which works searching on the Woocommerce products screen, on this page, it doesn’t return any results.

Sku is in the list of Active Sources, so I’m not sure what’s going on. I’ve refreshed the cache to be sure, and I’d rather not reindex it unless there is a good chance it’d fix it.

Thank you for any help you can provide!

The page I need help with: [log in to see the link]