I’m using the latest OBS Version (21.1.0) available.
It seems that no audio is coming through the cable at all, so neither the meter in Windows Sound Settings, nor the Meter in OBS is showing anything.
Also there is no sound in the previously done recordings, doesn’t matter if a sepearte audio input is set or not.
Besides OBS i already tried it with XSplit and Wirecast, but without success.