I'm having the same issue as you, where do i go to edit the settings so my mouse click isn't set as keybind?
its on the starting screen where you would edit your background color. Then in the settings area (cogwheel) in the custom hotkeys area, you will see which one is set to your button. Hope that helped!
I had the same problem after updating Pngtuber+ and your advise saved me, thx a lot🙏
Your message helped me a lot too! Thanks a lot!