This package is a fork from homebridge-ewelink-max which I wanted to improve. It was a little project that I made for myself - hence the name beta in the title. I made so many code changes that a PR would have been out of the picture.
This package will eventually be deprecated.
I have released a new package which is much more stable and with a more appropriate name.
Please install my new package - homebridge-ewelink-sonoff.
Thanks, Ben