Hello

the support for custom post types (like woocommerce products) will be included with a next plugin update

Meantime you can add manually a related product

Please follow our documentation
https://demo.themeinprogress.com/internal-linking-related-contents-pro/pro-shortcode/

Thank you

Alex

Hello

this feature needs one or two month for the implementation (to ensure compatibility for each custom post type) , i hope this feature will be available within the end of this year
Cheers