It’s almost impossible for a creator to enforce contracts signed across international lines.

Related… IF an authorized version was done in another language, would they normally involve you? In my normal world of Technical Manuals, it is all over the map. As a freelancer I wrote manuals that were translated and those translations were given back to me to layout with the original art so I at least got control over the layout and had a chance at spotting some obvious typos in the translations. At IBM I wrote manuals that were translated and the layout was done externally too BUT I always got to review it and approve or request corrections before it went to production in those countries. Other places I worked, however, once I was done with English I never saw translated versions and I always wondered what kind of a mess might have come of those books.