Ninja Character - Dynamic gravity for characters & objects

Hello!
I am very excited that you made this plug-in and grateful to use it. However, I followed the directions and could not get it to work. I believe the misstep would occur with picking my blueprint for my character as the default pawn class. I tried to fix this but this is too difficult to do on my own. Here is a picture of my Game Mode from the World Setting menu.

Can you please help me? My Discord ID is Locke Delasol#5760 . I will also frequently check this webpage for a response.