We have 10 Alexa-enabled groups and 8 of them work flawlessly - if you say "Alexa, lights on", bam, it happens. However, in the master bathroom (a group called Bathroom), and my wife's study (a group called Study), this does not work for some reason. These devices were just added yesterday.

The switches are all Lutron switches, and if you say "Alexa, Study on" in the study or "Alexa, Bathroom on" in the respective room it works perfectly. However, the backend doesn't seem to recognize that these two echos are in fact in a group, so "Alexa, lights on" says "Sorry, I didn't find lights."

I've deleted and recreated the groups multiple times, I've removed and re-added the devices, and I've tried all sorts of naming schemes. The scheme that I use everywhere else doesn't seem to work here at all.

For context, the Study group has an echo named Study, has two light switches named Study Overhead and Study Floor Lamp, and is tied to the Second Floor thermostat. This does not work. Another example that does work is the Living Room group, which has an echo named Living Room, two light switches named Living Room Floor Lamp and Living Room Floor Lamps, and the Main Floor thermostat. All of the rooms that work correctly follow this scheme, yet somehow these two rooms don't work.

Amazon support seems unable to comprehend that these devices control the lights just fine and is fixating on "your device doesn't control your lights" and giving me skill troubleshooting steps over and over instead of understanding that the group feature is what's not working. After numerous back and forth emails with nobody actually reading/comprehending what I'm saying I've just given up on that route.

Does anyone here have any suggestions on things to try? If anyone from the Alexa team is reading, I'd be happy to work on diagnosing this directly as well. Thanks in advance and Happy Thanksgiving!

Update: Seems that the four new Lutron switches I just added are not recognized as lights by Alexa. However, when I tell it to turn a group on, it sends the command to everything that supports it in the group. Weird, because all the other Lutron switches are recognized as lights. Seems like it might actually be a bug on the Lutron side re: the device capabilities they're sending to Amazon.