Not sure. I tried it, changing all that I know how to change from instructions (I'm not a dev), but it did not work. Probably I missed something important. From this thread he says it can run local (which I couldn't get working), but won't show status updates without access to Insteon's cloud instance.
Here he confirms you need to have an API key, which Insteon isn't issuing anymore, to even legitimate developers. I did it with other API keys, but I had issues on those other products. Not sure it was related, but I stopped using it because I moved onto my completely local solution via Hubitat, Homebridge and HomeKit automations.
If someone could make this work, I would try again for sure, but I'm much happier with a completely local solution, so that would be ideal. I did reach out to kuestess (who is also the author of the Insteonlocal Homebridge plugin), but he said he had no plans to move to Hubitat. However, he did offer to help with a port. I'm not the right guy for that though, and I had already moved on to my current setup, so did not pursue it further.