You can ignore these messages.

Any message in the log starting with "!" is coming from the plugin. The plugin writer can choose to implement or not implement any broker command. The plugin writer decided to output this message for unavailable commands (zorro.exe is making the calls) - in my opinion, there is no need for the messages, maybe log-only would be appropriate.

Are you absolutely sure that you're using kvm's plugin and not the other Dukascopy plugin?