Hello @sdoros,
I just made a change to the project so please clone or download the latest “sdr-spectrum-monitor” repository and push to your device. You can then add a device variable in the dashboard named ORX_SDRHU_KEY with your sdr.hu key as the value. Once the variable is added and the application restarts, it should attempt to register using that key. Since I don’t have a key I can’t fully test so let us know if this works for you.