I’ve been trying for yonks (>two full days, plus crashing HA along the way) to get duckdns to work on my home assistant, so that I can remote access it from my telephone. Without success. There are pages and pages of people trying to get it to work, with multiple suggestions, mostly without success. I then came across Tailscale, it took me all of ten minutes to set it up, and WORKING. Whow, so hope this helps anybody trying to get remote access to their home assistant. This is not a publicity for Tailscale or Duckdns, just I’m so pleased to get it finally working.
I have everything set up to do this as well, but on my Pixel running GrapheneOS I would suddenly lose all network access until I turned TailScale off and back on on my phone. That’s the one thing preventing me from switching over (also certs, since some next cloud applications don’t play nicely with the default cert)