The green LED is blinking in 1/4 second mode which means Wifi connected but not connected to LoRaWan server. There have been a few occasions when it did connect but most of the time it does not.
Power cycling and setting it up again did not help. It is set to the Legacy Forwarder. I have been using it intermittently for node development. I am in the US region.
Back to normal now. It is ok for my node development but nevertheless frustrating. I will not deploy in the field. Wonder whether the intermittent use causes the problem since the firmware update is not continuous.