I wanted to say that for users that get kicked, they should get a different message instead, like "You've been kicked for [some minutes]", so someone that gets kicked for their first times understand they got kicked than wondering why there is an error. Just a small suggestion, thanks
Actually, when a person is kicked it says "You have been kicked from chat. Take a moment to cool down. Your ban will expire in (however longer they have wait) minutes." Or something like that. Can't remember the exact message.