Hey Armin, I thought I had updated the theme, sorry for that! The website was not working at all because using the Carousel plugin was crashing my homepage. I was working on it with Marius. Now that I updated the theme the homepage is visible again, so the Carousel issue is fixed, but the menu anchor point problem is still there.
Please see for yourself. As soon as you click on any of the anchor points in the menu, the last two parts of the page disappear (STILLS and CONTACT). I suspect the issue could still be with the Carousel plugin which I use for the STILLS section, as everything under it disappears. Thanks!