They are using a custom font for they module, as said in Font Customiser
If you delete their /Data/FONT_DATA.XML
from the module's folder it will fallback to the original one.
Probably their font_data.xml
file is missing or corrupted.
That is the file that tells to the game where to select, where to "cutout
" the "letters
" printed and serialized in the texture.
If you see any garbled text from any Warband mod or derivatives that is the cause.