Error. Starting PostCard without Bluetooth

Starting PostCard without Bluetooth

Hi, I’m answering questions about the initial tests of the Postcard RTK without the portability shield.
It works fine overall, but a couple of times at startup, when I plug in the USB, the blue light starts solid and doesn’t allow Bluetooth connections.
I don’t know what’s causing this.
Am I doing something wrong?
Does my Facet have a way to properly turn it off?
Does the Postcard require a special shutdown procedure?
Thanks
Angel

Odd - are you connecting to power only or a PC?

Plugged into a power bank. It’s been a couple of times, with many connections. A very low percentage in my tests.

Of course the postcard is in rover mode.