Failed to connect to host server

So I got a new router today.

And I plug it in. Set it up and do everything to make sure everyone is getting a internet connection.

But, now when I launch crossfire. I log in properly. Then when I enter the game I get to the map surface. But, all the players are frozen then I lag out and it says " failed to connect to host server" please help me I want to play and have some fun since I got a new internet.