Hello Bob,
I am in a similar situation as OP where my phone which got stolen 4 days ago, was detected somewhere 13 hours ago on Find My app. It was detected in the middle of a grocery store parking lot so I assume it got reported via bluetooth of someone nearby.
I had the erase pending status on it on the app for 4 days but now it just shows the address where it was last detected, and still gives me the option to cancel erase.
Does this mean the phone only reported it's location via bluetooth and didn't receive the command to wipe itself?
Is the bluetooth feature only one way reporting of location and doesn't tell the phone it is lost?
Since I've already got a new phone, it has no cellular connection nor wifi(I think I had it turned off to save battery), so it is very likely that it will stay with the thief with my data on it forever. I hope they didn't look over my shoulders to see my pin before hand.
Thank you in advance.