I deactivated plugins and once again activated. still Loco not functioning.
additionally, I made small change in Homepage component (added component). may be because of it.
your opinion?
You can set the language of the site in Dashboard > Settings > General. Now I have set Russian and Browse categories translation has appeared. If you want to show Russian translation you should set Russian, If you want some other language, you need to set it in the Dashboard > Settings > General and create the same language accordingly.