No, I don’t even really know what CircleCI is, I only modified the following files:
- Constant.js
- Service files
- app.jsx
- i18n files
For your first problem, it’s really strange, on my configuration the messages work perfectly, for now you have to reboot gladys after clicking on connect.
I am currently writing a doc for the service
It’s fixed, I forgot to add a value in the constants 
I’m going to ask for help from @isokar as it seems to be him who developed the module for the v3 and I’m having trouble with the Milight.
I think you are mistaken about the ID (on most of the sold outlets I can’t tell which one it is)
If you have a remote control with your outlet, do not create a device (beginning of the doc)
You just press the button of this outlet and the device appears!
If it doesn’t work, first check if the LED of your Arduino Mega blinks when you try to turn on your outlet in Gladys.
Thank you for all your feedback 
, it occupies a bit of my coronavirus vacation 
and if you have any other questions, don’t hesitate