I´ve the same problem. Theres a black screen (because he doesn´t find the Server) over WAN. I opened all ports and disabled my firewall but it sill not work. Over LAN I see it through a camera on the ground but i can´t control.
And molotov, can you send me your code where LAN goes and if it works now over WAN then please send me that code. Then I can try, too.
(WAN = Wide Area Network; for example: big company networks or the internet)

P.S. excuse me for my poor englisch, i´m german!