So far, it has proven to be more robust against spam bots.
To do this, additional legible fonts (ttf) would have to be added to the captcha image to reflect all FlatPress languages (e.g. Turkish, Greek, Russian, Japanese).
To do this, you must first read out which language is set in the admin area or is used by the user.
https://wiki.flatpress.org/res:plugins:fpcaptcha