Voxal playing back sound when turned off/uninstalled

[brokenvoicechanger]

When I plug in only my headphones, it plays back every sound that's happening in my room extremely loudly with a long, echoing screech in the background. 

When I plug in my mic and my headphones it plays back all the sounds playing from my PC.

How do I fix this? I'm pretty sure I didn't uninstall it correctly and I can't find a guide that tells me how to do it properly. Also, Voxal seemed to launch before the computer even finished starting up and was playing the extremely loud screeching sound.

[Guest Jsalgado]

Please open a support ticket here: 

https://www.nch.com.au/support/supportcontact.html?software=Voxal&support