A Unity ID allows you to buy and/or subscribe to Unity products and services, shop in the Asset Store and participate in the Unity community.
Separate names with a comma.
I remember that I had tested it, so the bug of your game must be somewhere else. Maybe you had joined the right server but there was something...
I have built them to a dll, changed nothing but wrote off line 271 to 279(version 5.6). For OSX, go to folder...
Check the source code of NetworkLobbyManager Line 257....