links not working on 3rd level menus after wp update

Hi, none of my 3rd level menu items are linking through to their pages since updating to the latest version of wordpress this morning.. I’ve deactivated all other plugins and can’t see anything conflicting, and I can’t see any settings amiss in the menu settings or max mega menu plugin settings. Are you able to help??

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