Thank you for your reply Simon,
My home assistant is running on a Raspberry Pi 3 B and I am using the official Hassio image.
I set the Portforwarding same as yours but still not working.
So you’re saying it should be working with any proxy? I’am using now the Nginx Proxy Manager.
Maybe there is something wrong with my configuration here?
When I try to connect over the Raspberry Pi’s IPv6 Address it’s also not working but when I try to connect over the IPv4 address (http://192.168.178.38:80) its working.
Do you have any idea what I’m doing worng?