Missing category

Hello guys. On one of websites I am missing a category on my webshop created with woocommerce. Category name apears when you click shop buttond, name of category is OPREMA, but that same category is not visible in the side menu for some reason. Latest 4 in sub menu are sub categories to that OPREMA category and they are filled with products, same like any other category that is visible in the shop and in the submenu of the shop. PLease help.

The page I need help with: [log in to see the link]