Hi there, on the page, there's the plugin Events Manager (from the Word Press PlugIn Directory) which lets you select any page as events list and, at the place where you insert the code, creates that list. Leaving your text and HTML above and below untouched. You can see the list (with only one entry) under the headline "Termine" in the middle of the page.
There's a banners section below the content, and the banners now also display the events list, each of them.
Can I suppress that somehow? I'd love to see the real banner text instead of what that shortcode produces.