I switched on diagnostic notifications as Anthony has suggested and will report back what I find, and will also look at what having the app in the foreground does. I will also try reinstalling the app again after I run the iOS 10.3.3 update.
I should mention there is an outlier condition. When I’m approaching my door, I’m in a corridor where there’s no cell signal and likely no GPS. However, at that point, I’ve long crossed the geofence boundary. I presume this isn’t an issue since, before the last firmware update, the proximity unlock would trigger even when I was a good 30 to 40 feet from the door.
I can also see my wifi network at this point. So, allow me to ask: I’ve delayed setting up Bridge… could this be a critical piece in helping solve the matter (i.e., is there a wifi assist)?
This is likely a non-sequitur, but I’ve noticed that the delay between the app connecting with the lock (on the interior side) is shortened when I physically turn the latch… as if the connection delay (“Searching”) is mostly getting the lock to “wake up”, which the manual latch-turn gives the appearance of doing. Just another observation.
Again, I will experiment and report what I find over the next few days.
Thank you for the attention and support you’re giving this.