If you guys want to access homeassistant from anywhere and own a domain name, you can also use Cloudflare and a Cloudflared tunnel to do that. There is no need for any sort of VPN connection on any devices, running apps or anything else. HA creates an encrypted tunnel to cloudflare which you can access via your custom subdomain. You can also add an additional layer of security by putting a login with GitHub or another SSO provider in front of it.
I recently created a new addon to use Cloudflare, so feel free to check it out and let me know what you think:
Included in the following addon repository: