WordPress Menu

Hi guys,

I need help please!

I wanna create a menu, but it does not work, somehow.

Here’s a video of the problem I have: https://www.loom.com/share/b773ac6113d9417e84d48eae92549b0f

I already changed the theme, deleted the plug ins, …

Thanks in advance!

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