As the title says: As soon as I am connected to my home network via Wifi, the iOS app can’t reach Home Assistant. If I turn WIFI off it can connect to HA externally.
It was already (automatically discovered on first app start), then I removed and added the SSID again but still not working.
Although I am able to control my light entities provided to Homekit. So, it may be an issue with the companion app itself.
This is a complete new issue to me, went from Android to iPhone.