This development device typically disconnects and then reconnects a few seconds later, once a day or so:
Today, however, it disconnected about 8 hours ago:
2023-08-28T19:49:03.465 +00:00 [Status] Device disconnected
and has not reconnected. It is now flashing red, evidently failing to find a carrier.
Nothing has changed wrt to setup, location, RF environment, power, etc.