I verified that DDNS address works from outside my network. Also, I don’t use SSL so the protocol should be “http” instead of “https”.
But let’s put the DDNS address apart for now. I would like to focus on the reason why I can’t access from my local IP.
I put “http://RASPBERRYPI_IP:8123” in Home Assistant iOS app, and I get that error.
If I type it in the browser, I can access.
From the iOS app, the redirected URL is the following (not working):
From the browser, the redirected URL is the following (working):