There isn't a Russian language file for Komento app in /administrator/language/ru-RU/ru-RU.plg_app_user_komento.ini hence it falls back to English at en-GB/en-GB.plg_app_user_komento.ini
The app is independent from EasySocial actually. Each application has their own set of language files while the EasySocial language interface only installs EasySocial core language files.