do NOT update KPW to 5.3.3 if you want for Duokan to keep working.
Chinese said they are looking for a solution, so not ready for 5.3.3 yet
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Here is the Romanian version for the Duokan v7.8. Simply to copy the file in the folder
\DK_System\xKindle\res\language
It is far from perfect but at least it works better than the misterious Chinese characters