Can't Connect to Dedicated Server

I have a dedicated server in a linux machine and I’m running the client in windows, i can`t connect to the server at all. The ports are open and working, i can ping them from windows and i get a valid response. But in the game server the is no connection to the client.

Is it working with a Windows Server?
Is the Linux Server getting to the GameSession::RegisterServer function?

Done i manage to connect whit the server, the problem was that the port isn’t open for UDP and it was missing the port forward for 7777