Did you test it on multiple computers and also had other people run some tests?
Kalphiter says he tested it and it works.
Anybody can do it simply by joining your server and pressing two buttons.
Not if the server is passworded.
No, it's petty that you're trying to prevent it.
I totally know that. But the other players are more stupid than we are, and you have to respect that. If I want them to use my add-on, I have to listen to their concerns, regardless of how irrational their concerns are.