Our server, like all computer systems, crash occasionally. Cars do it too. Especially if one of my adult children are driving.
I don't understand why the master list doesn't show us. Occasionally I check, and sometimes we show and other times not. Copy the IP address down so you can always enter us if you need to.
I'd copy the entire cod file, program and all. That way if the computer or the game hard crashes you can paste the saved program over the broken game. No loss of rank. I've done this twice and it worked great of me. No guarantees, but it could prevent you from having to start over.
See you on the server.
Trogg