To confirm, when you ask Google to turn on Heavy, and it gives you the error message “found multiple matching lights.” you are unable to confirm what google hears through the google home app as described here?
One is “Hey Google, ask alarm.com to turn on bedroom” after which the alarm.com voice comes on and says “Sure, turning on the bedroom, is there anything else I can do for you?”
Or you can say “Hey Google talk to alarm.com” after which the alarm.com voice comes on and says “How can I help you.”
Do both of these command types fail with the same error message when asking to turn on heavy?
Yes, but how do I get it to work the way it’s supposed to?
You can try removing the Z-Wave device from panel programming, then re-adding and running a Z-Wave network rediscovery. Afterwards test the Google Home interaction again for resolution.