Missing Shipping Information

Hi,
I have created an XML feed for Google Merchant, but there it says it’s missing the shipping information.
I tried to add the shipping fields but I think Google Merchant needs to get the info from very specific tags like <shipping> -> <country> – <region> – <method> – <price>, and I can’t find out how to add this info through the plugin.
You can see the XML in the following link:

https://staging-owsczech.kinsta.com/wp-content/uploads/wpwoof-feed/facebook/xml/google-shop.xml

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