Suddenly one of the two hardware stopped working. I already tried to change the USB cable but it didn't work. It turns on normally but always remains on the home screen even after being connected.
@MiKizPlay so you mean you have exactly 2x the same D2? Have you tried the following? My Native Instruments Hardware Device is Not Recognized
Have you tried on another computer? It looks like a hardware issue, better get in touch with our support to make sure: https://bit.ly/NI_Support_All
