RAK 10701 LoraWan Field Tester

Hi.
I try to access the online data from my new RAK 10701 LoraWan Field Tester following the TTN configuration instruction and I can not see anything after receiving de QR in the device.

Any idea of what can be?

Regards,

Alejandro

I have the same problem. Also it would be excelent to have a sample of the payload, so that we can check if the function provided in the documentation works.