Afterglow

When I speak into my microphone with Preview turned on, I can hear my voice (my regular voice) played back to me, and yet the mic level meter is empty, as if the app can't detect my mic's signal. That doesn't make sense that it can't detect it though, since it IS playing it back to me. I've tried changing my recording device in options, that's set correctly. I've tried opening windows record mixer to toggle "listen to this device." BTW, the app was working fine yesterday, and I haven't changed things since, aside from installing VB-cable, which is not currently being selected in options. The log reads:

I'm trying to use Voxal together with Discord. According to tutorials I've looked up, it sounds easy: But in my drop-down menu, Voxal does not appear. So I need some help. I've also tried just using my regular microphone while a voice in Voxal is turned on, but Discord doesn't play well with that. If echo and noise suppression are on, then my voice won't be heard. If those are turned off, then my "S" sounds are harsh enough to hurt the ears in a way that doesn't happen with no filters applied.