Ah i see. I didn’t know yet there were unresolved bugs.
The dev is unhappy about Athom at the moment, maybe emotions fade and maybe the app will get some love at some day. Just be patient.
I just installed it, and made a group with 3 RGBW lights, and it does what I tell it to do manually and in a flow. No problems…
Can you describe the issue(s) you encounter?
Another very nice way of grouping devices, is using a device called AVD, advanced virtual device. It’s part of the cool Device Capabilities app.
Here’s an AVD group device of 2 energy devices, which sums (other calculations available) the energy values on the fly
Of course this can be done also with lights, like this, with three dimable lights
When you copy these settings (but pick your own lights of course), it should work right away:
This is the group of lights as one “group” device:
