My set up is very similar to Chris. I can also access my domain remotely. I tried that using cloudflare and it worked.
This is what I wrote on deleted post without insulting some guy.
You need two addons. Adguard and nginx.
First you will create some free domain. I’m using dynu dns.
With nginx you can create proxy host and get cert for that domain. How to get ssl cert is explained on their site.
In nginx just type domain name you created and use scheme http.
For ip address use home assistant ip and for port default port 8123.
I can get ssl certs for domain in nginx as this container have built in support for letsencrypt but I don’t know will this work in other types of installations because it depend on containers they are using.
When you get your ssl cert there is only one thing left to do.
Go in adguard and use dns rewrite. For domain name use your domain and for ip address ip of home assistant. The same that you put in nginx.
And that is it. All certs that you created will be renewed automatically as nginx is taking care of that. When you set this once you can forget about it.
This is basically the same thing as Chris wrote just using two not so much different approaches. Mine is router independent as router doesnt have a clue what is going on.
And Tom I appreciated you and your work. I don’t have any complaints on you.
But some guys on this forum are obviously, at least from my perspective, doing everything to get reaction from me, to say it as polite as possible. I know i could react better.