Can access phone app, but not via web

[Kocrachon]

So I got my subsonic server up and running. Some how, I am able to access my server via my phone app, but I cannot access it via the website. My router is forwarding ports 4040, 80, and 443. Any other reason why the wbesite might not work? Except for when at home, I can locally access it, just not from computers outside my internal network.

I have tried form an ubuntu machine, and from a windows machine. I have tried chrome, firefox, and IE. Are there some additional ports I need to open?