Maintenance completed. 
It seems that they fixed most of the bugs that were recognized here, now it seems much better.
I don't know how the translation to English was solved, it seems to be done on the fly. When I open it, the Russian version is loaded first, and after a few seconds, everything is translated into English. A bit unusual, but ultimately functional.
I don't know if there are plans to add more languages and how it will work then.