My New Whisperer 2, after worthing fine for 2 days connected in the garden, now doesn't switch on any more, even after USB charging (showing full charge green light near the USB socket). It's offline and nothing happens when pushing the power button once, for 3, 5, 10, 25, 30 seconds.

What do you think ?

Where to see Whisperer data collected in the Netro ?