So I went to the mobile version today, and the language of the interface was Russian (even though I'm learning Spanish from English)! The phrases in the lessons, however, stayed in English, and so did some of the sections' names. Why did this happen; is it because of the update? (I am Russian and I use my mobile device in Russian)
It's is because you use your device in Russian and the translation files were released
So why then didn't all of the sections' names change?
No all of them are translated, most ones in the bottom of the tree still have english names. I have the same issue and don't like it. It would be better to have a separate option to choose the language of the interface.