Sorry fellows, only ancient languages that constituted the core of the early Sailfish OS (English, Chinese, German, French, Italian, Spanish, Finnish, Danish, Norwegian, Swedish, Polish, Russian, and Portuguese) show translations for Apps, Games, Marketplaces (and all their subcategories).
If you switch to any of those languages, then Jolla Store server will give you translated categories in the language that you have set in your Jolla Account.
There are long standing mouldy bugs that unfortunately we did not have time to address due to the number of moving parts they involve (as you can see) vs. the importance that they’d solve…