My living room TV command leads to this. Me: Alexa, turn on the living room TV Living Room TV turns on Alexa: I’m sorry but living room TV is not responding. I used to have your issue. I found multiple devices named Living Room TV (one was a Fire TV). I still have this issue with my Master Bedroom lights, which occasionally throws me the error of multiple devices, even though I can only find one. One thing I have noticed is that the plural terms don’t work the same and groups with those names must be setup too. (Example - Master Bedroom Light vs Lights)