@VIOFO-Support Thank you for the response
Yes the camera enters parking mode directly when the car is parked in the Geofencing area. It previously switched OFF due to the Geofencing settings.
The coordinate stamp in the video clips before and after the engine was switched off (from driving to parking modes) match within three decimal places and also match what is stored in the GPS Parking setting for Zone 1 which was enabled.
I was tempted to try reformatting the SD card but did not want to lose videos if it helped understand the problem.
I have confirmed Geofencing has completely stopped working during my last 4 parking events.
I have an A229 Plus installed in another car with Geofencing that parks in the same garage, and that camera has been working perfectly with Geofencing. It's the A229 Pro that recently stopped working for Geofencing.