blackwidow elite digital knob for mute and volume no longer works

good day

unfortunately the digital knob doesn't work when synapse 3 is running. i can't adjust the volume with it and the mute button doesn't work either.

as soon as i deactivate the synapse software, the knob works again and also the mute button works.

in the synapse software i did not find a setting that solves my problem.

if i assign the knob with the functions title forward and backward, the knob works and also the mute button works again

but when i set the knob back to the default volume setting, the knob and the mute button no longer work.

Since the knob and the mute button used to work before, I assume that the problem has occurred since the last synapse update

i have installed synapse version 3.5.610.60513