Featured Slider link problem

Hello, I have an issue with die featured slider in my theme. www.dgfx.eu the Slide with "Gastro Info Screen" ist link to the main site and not to "Web-Programme -> Gastro Info Screen". If I set another side at the slide position everything works perfect. I had delete this page and create a new one. But I have the same problem again. I hope you have some ideas how to solve this problem greets