NDI Audio problem

Hi everyone,
I’m having this issue with version 2.4.3: I’m receiving a 4‑channel audio NDI stream where channels 3–4 have the same content of 1–2.
The outgoing NDI stream contains only 2 channels and the audio is distorted.

I tried lowering the layer volume but nothing changed.
I couldn’t find anything online, do you know if it’s possible to adjust the volume of individual audio channels to mute channels 3–4, or if it’s possible to enable more channels in the NDI stream to avoid the downmix?
I assume that’s what’s causing the problem.

Thanks.
Andrea