Nay, it does NOT work outside the house

Over the weekend, I tested orb within the home network, 192.168.x.x and worked like a charm. Now I am back to my office, away from home, orb does not work. Here is the problem and what I have tried

Orb connected, and media player kicked in, but the program stopped there, nothing got played, no TV, no mp3, no error message. It just sit there.

I tried with VNCviewer, it worked perfectly. From my office, I can see my home computer and read off things from HD. So, I think it is not the connection, nor the firewall. As VNCviewer worked.

So, what can I do to troubleshoot this thing?

TIA,

bun