Yes, I tested it in Dub Mode as well. I made a new recording there and playback is also completely silent inside the game.
So playback is silent in both the Mic Test & Crust page and Dub Mode. However, the recording files themselves definitely contain audio — I can open the saved recording outside the game and hear my voice normally.
Live Microphone also works normally.
So it seems like the recordings are being created correctly, but Choicer Voicer isn't playing them back correctly in-game.
i am having the same exact thing happen to me its very odd it feels like iv tried everything too and still no luck i think i prolly has something to do with my headset and the software that voicer choicer uses. I'm using steelseries arctis nova pros and iv tried other headsets still no luck witch is super weird cuz it worked for me before and randomly stopped. iv also used other peoples app on there device and they all used wired head sets so that might just be the case but then again i rlly don't know.
