I’ve installed the DuckDNS integration and it works with http OK when accessing from my phone. I forwarded port 8123 to the Pi on which HA is installed.
I added the recommended following lines to my configuration.yaml file, in order for HA to pick up the certs in /ssl (which are there):
http: ssl_certificate: /ssl/fullchain.pem ssl_key: /ssl/privkey.pem
But on restarting HA, it refused to start and I had to ssh into the system and remove the lines I added, before it would start again.
I’d welcome any ideas, please!