Hi,
I can't "properly" define language of books for Kobo ereaders (latest firmware). All my books are described as "English" in "View Details" option. But all of them are Polish and Polish is defined as book's language in EPUB's metadata. It does not difference between EPUB and KEPUB (converted by Calibre).
Is there any chance to define/recognize Polish books for/by Kobo ereaders?

Best regards
Cyfranek