Android Notifications Stopped - summer 2023

[Zavod]

I recently noticed that my car was overdue for service, and that caused me to realize that I hadn't received any Android Notifications from aCar for a little while. Probably a couple of months?

So I looked at the various settings:
aCar Settings: "Status Bar Notifications" is ON
Android Settings->Apps & Notifications->aCar->Notifications is all ON

I then noticed that Android was showing that aCar was averaging "~0 notifications per week", which implies that aCar isn't sending notifications, not that Android is suppressing them.

My wife recently added her car to aCar (on her phone, same account: we're in sync) and we are speculating that may have been the timing of when mine stopped sending notifications? (not certain of this, but possible)

Any ideas?