I made a server Called Shikane Drifters2 on demo server
But If i want to join it says: Circuit info not received.
and thats it, just can't join anyone knows how to fix it?

Please checkout this thread http://www.lfsforum.net/showthread.php?t=9572. The port forwarding section is of use to you. Most likely.

Nop, before forwarding my ports it said server not found on main host or something and now i forwarded all ports it does show the server but I can join