Your Facebook Commerce settings are missing. Please do the following:

1. Navigate to the catalog of your Facebook Commerce shop. This is where you upload new items manually. It should look something like this.
2. While on the catalog, open the extension settings and click on the cog icon next to Facebook Commerce.
3. Click the "Refresh" button. This should make the extension automatically recognise your Facebook Commerce settings.
4. Now go to whichever listing you want to copy to Facebook Commerce and click the on the listing. This should start copying the listing to your Facebook Commerce shop.