Hassio NAME_NOT_RESOLVED

Hey All,

I just installed HA Dashboard using the documentation. Now I am trying to add my own sensors to the dashboard. When I open the dashboard I get an popup that says there is an error. When i check the dev console this is visible:
GET http://cp.local.io/state/device_tracker.oneplus_phone net::ERR_NAME_NOT_RESOLVED

This errors occurs because my HADashboard url is http://192.168.1.xx:3030 instead of cp.local.io. I changed the domain in the appdaemon.yml and in the frontend of HASSIO.

I think (and hope) I am missing a single setting but I cant find it. Thanks for reading and I hope we can sort my issue out.