Hello,
Thanks for the reply.
1/ About categories, our demo uses the next images – https://v9m6d2m2.rocketcdn.me/elementor/demos/minimal-electronics/wp-content/uploads/sites/71/2022/02/1-min.jpeg you can try to upload such image for your category and check the result.
2/ About products, after your notice I’ve checked more deeply and found out that the demo uses custom CSS code in Theme Options > Theme custom CSS for borders, so I’ve added the code for element on your site – https://prnt.sc/OXjyXxst7wX_
Kind Regards,
8theme team