Hi, Kevin.
I followed your instructions for unsupported language but nothing changes after publishing. And the file is too small - 483 kb.
C:\Program Files (x86)\Steam\steamapps\common\Divinity Original Sin 2\DefEd\Data\Projects\[My Add-on Project]\[Translation folder]
I tested copying the translation to the localization folder and changing language.lsx and it works fine, but I can't do that with publishing. I've reread many times the wiki but I can't solve this for publishing to my friends.
Please, help.