i'm sorry to ask again but i really need helpp

i'm a linux user and well..

after i finally figured how to open it (noob) i plugged my mic and notice it didn't work, i tested this mic if it worked ,it worked on my phone and the notebook im using for use the program but it still didn't work...i checked the mic config and the same result 

HELPPP MEEE 

Ok, same? My mic works fine, but PNGTuber+ doesn't seem to detect it? How can we change that?

edit: I just found out where to change the mic, you need to be OUTSIDE of the edit mode, with the transparent BG. There is a mic icon in the corner, and you can select different options in there. One should work for you.