Hi. The right fader (and only this one) no longer works, as well as the associated Mute button on my Kontrol F1. The problem is only in my headset, everything is normal via the speaker. In the headset, I cannot lower the volume or put on Mute, regardless of the position of the fader and the lighting on the button. I recalibrated the faders via the software but that does not change anything. Thank you in advance for your help.
Edit: removed 'code' box