Dedicated Server Connection Error Github version

hi i have a dedicated server. We are a team of 5 people. we can connect server in local like open

But when we try in server, we cant connect. we have static ip ( ) and we have open port (port-3389 open) we run server and we try open we cant connect. We try all ports 7777,7778,7779,7780 but we cant connect. How can connect our server?