Where you can watch

The service is called Jellyfin (that's the app you'll look for in app
stores). It works basically everywhere:
In a web browser (easiest)
Go to https://jellyfin.theduckynerdball.com and sign in. Works on any computer.
On your phone or tablet
Install the free Jellyfin app (App Store / Google Play). On first launch it
asks for a server address — enter:
https://jellyfin.theduckynerdball.com
Then sign in with your username and password.
On a TV
There's a free Jellyfin app for Roku, Fire TV, Android TV / Google TV,
and most smart TV platforms. Install it, and when it asks for the server address,
enter the same address as above, then your login.
Everything syncs — start a movie on the TV, finish it on your phone, and it
remembers where you were.