heya! sounds like an issue with the audio output. Go to audio settings in vtspog and select the output to be your output device of choice (headphone or spealers) and make sure it doesnt have "default" in its name when selecting it. Windows sometimes does some weird stuff when vtspog tries to access devices listed as that (they should appear listead twice, one normally and one with the "default" in the name). After selecting it remember to click the button "select device" on the top right and then save vtspog. Once it finished saving, restart vtspog and see if that did the trick.
Also when opening vtspog check if the green message that says vtspog started correctly appears after doing that.
Try that, and if it doesnt work create a thread over at our discord server (you can find the link in vtspog itself at the bottom of the left menu). If you are reading this on the 9th I probably wont be able to check that today but hopefully tomorrow on the 10th i can check it in detail. I'm confident we will be able to fix it together if so ♥