They are using a custom font for they module, as said in
Font Customiser.
If you delete their
/Data/FONT_DATA.XML and
/Textures/FONT.DDS 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.
Have fun
