Xfinity

Hello I need some assistance, I've ben try to fix my space engineers server for a month now but no luck. What's happening is that every time i try to start up, restart or launch the server it gives me the message the server is not responding , No matter what I do it will not launch the server even though the website says its open for a couple seconds but after i reload the page its says its stopped. If anyone could help i would very much appreciate it