Hello,
I have checked your site and the product archive and single product pages are showing fine.
See Screenshots for clarification: https://ibb.co/4ZCR9BXC & https://ibb.co/hJzm7F5K
But if you want to change the design, Try to use the Theme’s Layout Builder you can create Custom Layouts for WooCommerce pages like Shop, Category, Single Product page, Cart and Checkouts. So, you can use that to create your own custom layouts for category pages or use predefined layouts.
Further, you can read more about the Layout Builder here: https://xtemos.com/docs-topic/woodmart-woocommerce-layout-builder/
If you have any questions feel free to contact us.
Best Regards,