I'm trying to connect with my father's computer. He is in an assisted living. I want to be able to connect to his computer and help him when he needs it. One thing he needs is help securely logging into his computer. I've installed the program on both his computer and mine. While I'm at his apartment, it TeamViewer works great. When I'm at home, I'm getting the message, "Teamviewer not runningon partner computer." Can you help me?