Missing product fields

Hi, I’m developing a WP site that will sell a few products. I want to use the WP site as the main storefront, and shopify as a backend only. Love you plugin! It’s perfect for this — but I have a little problem. In Shopify, I’m using an app called ‘Product Infinite Options’ to add a couple text entry fields to the products where buyers can enter their company name. They show up on the shopify page, but not on WP. Here’s the product on shopify: https://shellstock-tags-software.myshopify.com/products/shellstock-tags-license-for-dot-matrix-printers and here on the WPdev site: https://vps46302.servconfig.com/~shellstocktags/buy/. The fields are added by the app to all products — not on the product editing page. Any suggestions on how to make sure these fields are included?

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