I'm sorry you're having trouble with younity. Let me take a few sentences to try and explain how younity works. First, Your computer must be on in order to stream files. Second, one of the two possible connections must be 'green.' Currently, in younity, there are two ways to connect to your computer. One is directly via LAN, the other is using our relay servers. In your case if you're on your friends WiFi connection your computer should be available over our relay servers. If your computer is on and younity is running but iOS shows 'red' for our relay server then you may have a problem. Let me know if that clears things up or if you have any other questions. Thanks.