Atom Echo wake word toggle disabled

I’m having the weirdest problem with my Atom Echo - the wake word selection toggle is visible, but grayed out:


There’s no wake word option under the voice assistant itself either; it just ends after text-to-speech:

As background, my HA instance is running in a Proxmox VM. For a variety of reasons I wanted to start clean, so I made a new VM with all hardware identical (down to the MAC address) and started from scratch with a fresh install. I had this exact Atom Echo working fine with my previous HA VM.

HA is fully up to date, ESPHome Builder is fully up to date, and the full Wyoming Protocol - OpenWakeWord, Whisper, Piper - seems to be running fine.

The Echo is on and active, confirmed working fine with the default “okay nabu,” but I can’t select any other option.

Help?

Show the code for your Echo.
If you use microwakeword, you will not have the selection window active.
The openwakeword configuration has been moved, you can read this thread.

Oh my ***ING GOD, I was overlooking it in that top-right 3 dot menu ALL DAY! I must have read 15 different “getting started” tutorials to see what I might have missed, and not a single one of them mentions enabling this option. Jeez louise, thank you!

Actually one question - can you point me at some good resources for MicroWakeWord? I recently got a Voice Assistant PE, and it sounds like it won’t take my OpenWakeWord model so I’d love to generate a new one.