Suddenly stopped picking up shots

My r10 has been working fine for months.  A couple of days ago, in the middle of a session, it just stopped picking up shots, and it hasn't been able to pick up any shots since then.

I've unpaired/re-paired the device.  Uninstalled/re-installed the app, etc.  Under garmin devices it shows as connected, but when I hit the ball it doesn't pick it up.

App version is 2.12.2.