Since Airbnb uses the traveller inbox for support of hosting issues, it sounds like you are in your traveller inbox, @Dennis696 . On your browser, make sure you are in hosting (the screen that comes up when you just go to Airbnb.com has a "switch to hosting" in the top right corner. Or go straight to airbnb.com/hosting. In the app, make sure you "switch to hosting" through the profile tab at the bottom.
The default these days is "travelling" so switching is necessary to get to your hosting dashboard and inbox.
Let me know if that works for you!