Reply To: Unable to import a complete template

Hello,

Please check it now, the products are assigned to the categories.

Also, I have visited your site and tested almost all the menu items, products, and categories one by one by clicking. All of them lead to 404 pages. It seems the URLs are invalid. When I set the permalinks to plain then the pages are working fine but when I set the permalinks as Post Name, the pages are not working. So there is any issue from the server or htaccess file on your site.

Also, resave the theme settings and then check back after clearing your site and browser cache.
You can also check the below article for this purpose:
https://www.wpbeginner.com/wp-tutorials/how-to-fix-wordpress-posts-returning-404-error/

Best Regards.