eratic

I use https://github.com/qdm12/ddns-updater

I personally wouldn’t purchase modified devices or “TV boxes”. Its simple enough to set it up yourself; buy a firestick, install Tivimate (an IPTV client), and optionally a VPN client. You’ll need to find an IPTV provider which are usually subscriptions.

A reverse proxy isn’t a substitute for a VPN for access outside your network. And it isn’t any less secure; you only need to open 1 port however all of your services will be accessible via that single port which is arguably less secure.