Please describe the problem in more detail and provide us with temporary wp-admin access.
Could you provide a link to the result of the test via google search console?
To be able to give you a solid response, I need to get more information about the problem.
Waiting for your reply.
What those warnings mean:
– your product does not have reviews and ratings http://prntscr.com/pq7xfn Once users leave the reviews and rating these 2 warnings for the product will disappear. Our theme is not responsible for how your users add the reviews/ratings.
– “This Product is missing a global identifier (e.g. ISBN, mpn or gtin8)” – WooCommerce does not have option to add the ISBN, mpn or gtin8, so if your products have this information and you want to add it look for an additional plugin if not then just ignore this warning.
In general, the theme is not responsible for schema for the products, it’s WooCommerce plugin area.