Can't connect to selected server

[skribe]

Hello! I have set up so Jellyfin can be accessed from anywhere. Unfortunately when I go to the web address where I have set it up I can't access the server and get an error. 

I can get as far as "picking a server", but when I click connect I just get an error that it's unavailable. I remember that I had the same issue some time ago, but I can't find the solution... So I hope you can help!

Error: We are unable to connect to the selected server at this time. Please make sure the server is running and try again.

The short answer is that these are the symptoms of trying to access a server that is simply not accessible via a webui that is cached in the browser. So the webui loads, but it can't actually contact the server. Verifying that your ports are open and forwarded correctly, and that the machine is simply accessible to ping via the IP you're trying to utilize are good first troubleshooting steps. But you need to figure out why your client machine cannot communicate with the host.