Hi there @Tobias, I took a quick look at your page, and one thing I could see is that you may need to update your layout a bit… currently you have a div under the body and then more divs with sections within divs. The Section element has special meaning in Webflow, and these should only be used at the top root level of the site, under the body.
So you might have something like this:
Body
Section
Div
Div
Section
Section
But not:
Body
Div
Div
Section
So my suggestion is to update the layout so that you only use Sections under the body, and place other content in sections. I think that something funky is happening on the page due to the layout. You can tell if an element is a Section or Div, by looking at the Settings tab for a selected element. See my screenshot:

If I move that link in between existing sections, it works… but I think that if you correct the above, then it should also help your structure and fix the link.
I would try that, and if you have any questions, let me know…
Cheers, Dave