Hello,
The German translation for message id "system shutdown"(reason for being kicked, when the server shuts down) is: "Computer wird heruntergefahren" That's just like "Computer is shutting down."
That's not wrong at all, but sounds a bit misleading: Intuitively I would rather understand it as my personal computer than as the server.
So I'd propose: "Server wird heruntergefahren"
I attached the fixed po file.
Best regards, Jonathan