so now HA needs an proxy server and a DNS server? There has to be a simpler method that adding additional devices on to the network. More devices, more complex and more points of failure.

I have a number of apps I would like to implement down the road that will likely need some sort of connection either externally or internally via some sort of VPN. It is all very confusing as I everything I read seems to have me adding 4 or 5 more components for DNS, firewalling…etc when can’t my Unifi system just do that stuff? I paid more than enough that it should handle these tasks. It does DNS already, so why do I need an external DNS server? Very confusing. Why I have not moved forward on anything, it all feels over complicated and too many ways to screw it up.

I have never had it work with a URL and an internal connection. Never connects on internal. at least it used to not. If I remember there was some reverse proxy requirement or something I was never able to get set up. So I was reliant on the duckDNS which had quite a bit of outages for me. I eventually gave up on the companion app.