Hello, i used to have a server a couple years ago, since them i use the same key and now i cant connect anymore to my server, i tried testing with beam mp check tool and i got the error: “Server is reachable but failed to send data: Resource temporarily unavailable (os error 11)”
And the client connects and send error 3 or socket closed.
im troubleshooting for three days now any help is very welcome 
try making a new server probably old data on windows 10 os got left on the server
tried, still cant connect, any players from outside the network can see the server but not connect, i can join after code 3 if i use local ip adress (192.168.1.xx)
if you cant run your server dont struggle and just find empty servers on the list
are you hosting it btw or a server hoster
Have you set the IP value in the server config?