Hello There,
Your installed plugin Pirate Forms is also causing a JS error on the page. This might affect other elements on the page. When hover in and hover out several time in a parent menu item with a submenu, the submenu might not appear correctly because of the delay of the submenu. If you only do it once, it works but then as you hover in/out several times, you will encounter the issue.
If in case you want to get rid of the delay and would like to see the submenu as you hover in or out, please add the following CSS code in the X > Theme Options > Global CSS (http://prntscr.com/evui3r)
.desktop .menu-item>.sub-menu,
.desktop .menu-item.x-active>.sub-menu {
display: none !important;
}
.desktop .menu-item:hover>.sub-menu {
display: block !important;
}
Hope this helps. Please let us know how it goes.