Recently I finish my multiplayer script for a new game, so far it works great on the lan network. But when a client try's to connect over the wan netwerk, he just get's a black screen. On the forum it says that the router ports should be forwarded, so I did that but still a black screen appears for every client that try's to connect from somewhere else in the country. This is how the situation is; server to my router, than from my router to client his router and than to client.

For the server I use; -sv -cl -port 2332 -pl WL
The client uses; -cl -ip 87.208.9.255 -pl client

Can someone tell me what I'm doing wrong?