I’ve had to leave the board on a window sill for a good few minutes before the blue flashing light comes on, so it seems to need quite a clear line of sight and some time. I also read that the antenna needs to be flat – can’t confirm if that makes a difference though.
On another note, I tried to get it working using the USB port on a Pi Zero (W). The lights come on and eventually it gets a signal but I can’t see is show up as a device.
I’ve tried using:
dmesg | grep -i tty
But it’s just not there. Anyone else tried this?