DuckDNS SSL local connection to Configurator

I created a DuckDNS connection to my Hassio. I can now connect via the web which is great. But now I cannot use Configurator locally or through web. What am i missing?

Your DuckDNS and HA is only configured to forward port 8123 … the Configurator and other Add-Ons have their own port… and are therefore not accessible from outside.

You could do a port forward for the configurator-port on your router , but I’m not sure this will work.