Hi sevtra7,

First of all, please take my apologies for inconveniences.

1, 2. I can see the product categories’s images are showing correctly https://prnt.sc/FWyJi9Nb8f9_ https://prnt.sc/ByVPWKZVvwqZ

3. Please go to Appearance > Menus > select category menu and you can add categories to the menu https://prnt.sc/ApnrgJ9CJ6M_

Regards,