Domain directs to hosting provider. Pls help

Hello, I currently face the problem that I can connect my domain and even publish the site but as soon as the site is published, it says “issues detected” again. The main problem is that even tho my site is published, you get directed to my hosting provider ionos instead of my webflow site. I literally tried everything:

Here is my site Read-Only: Webflow - Medienheimat