Hi,

1. Sorry, but there are no other styles for this menu in our theme. We suggest you to enable Show current category ancestors option in Theme Settings -> Shop -> Shop page layout.

2. Try to add the following code snippet to the Custom CSS area in Theme Settings to change this

body .header-simple .main-nav .menu>li.item-event-hover:hover>.sub-menu-dropdown {
    top: 60%;
}

Regards