Hello, I have had this issue for a long time with RFactor 2. I setup a race and I can join it with my brother. If I need to change anything and end up stopping and re-starting the mod I can not re-connect. I get a message saying "Server Connection Failed" or something similar. The race is orange and just worked! yet I can not get it to work again. I have all of the ports open as the game works fine for the first attempt to join. Any ideas? Thanks.