Sorry to hi-jack your thread and for reviving such an old post. In case you’re still waiting, I recently developed a Homebridge plugin that allows you to control your Garadget locally over MQTT, no cloud service or tokens needed. What you do need, however - is an MQTT broker. Mosquito is a great option for this.
For more information, see this thread: Introducing Garadget integration for Homebridge, using MQTT