Google is not responding

My Google Assistant has been working great for a few months, and now suddenly doesn’t seem to know anything about HA. I can use TTS from HA to make announcements / notifications.

But if I try to initiate something from Google via my Google Mini’s, it “doesn’t understand”. I’ve got some scripts set up in scripts.yaml, and those are included under Assistant in the Routines, such as:
When I say:
“Set the alarm”
The google Assistant should…
Turn on alarm_arm_home

I’m probably missing something simple, but I’ve googled 'til my fingers are sore. Any help would be appreciated;