Font export/import/changing

[GreatTomy]

I saw some post here about font plugins, but as far as I saw they all are flagged as ,,solved" (or something like that, you know what I'm writing), but in program I still can't do much: export as raw (and don't even know what to do with it), txt (garbage) or json (it shows something, but there are so many things, that I think I can't work with it, especially if I don't even understand the file).
So my question is: is there a way to manage font? I work on translation and some letters in my language are beyond latin alphabet and game just don't show them.