WordPress menu links not working

Hi there,

Out of nothing my menu links (header) are not clickable anymore from the home page (As soon as you go away from the homepage they work fine). I did not touch anything, it really happened just like this, I hadn’t even logged in in a while, and updated my WordPress and plugins after, but nothing happened. Can anybody help me there? Would be much appreciated.

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