Hello again, I seem have to found the problem I was facing.

When I first inserted the plugin the parameter for "All Characters" was empty. I didn't pay much attention to this and went straight to testing.

This one small mistake led to the plugin not working entirely :

However when I pressed Text and back again to Structure the parameters showed up normally :

I'm honestly confused about this, I'm not really the brightest in programming >^< Really sorry if the following answers isn't quite understandable.

To answer your questions:

1. This picture is taken AFTER I used the working plugin (the json for the bitmap is created, when it didn't work before it didn't create it), but for this picture I'm using the error one (whenever I add it in, the "All Characters" parameter is empty like the picture above, though somehow it fixed itself after going back and forth Text and Structure).
   
   
2. As of the error happened, no I didn't use EliMZ Book. BitmapFont is the only EliMV plugin I used.
3. I tried using the font from the sample.
4. I did make my own, though I redid my bitmap after the plugin worked to match the parameter (I used this tool: https://stmn.itch.io/font2bitmap).

I'm really sorry if this wasn't a real issue with the plugin itself, I was really really stressed out when trying to find a way to make bitmap fonts and don't really understand programming that much. I really appreciate the quick respond!

Also this is my result currently (It worked fantastic 5/5):