Hello Carthagea! Thank you for the wonderful feedback!\
I've figured out why the microphone doesn't work on some people's PC. It's because of the Microphone privacy setting. I would really appreciate it if you could give Woolala Wowlala another try. To enable the privacy setting, please search for "Microphone privacy settings" in your Windows search bar. And finally, toggle to the option to allow external apps to access the microphone. Here's a gif to help out https://gifyu.com/image/SluPg.
Thank you!