The language being Russian is a bit weird, but that could be a "fall back" if the original language has no specific translation. The format of the dates may be a bigger issue, though.
@Umar I can't look at the latest link you provided (it's in your own Special:Notifications page, requiring me to login) -- can you instead explain what you expect to see instead of what you see?
Take into account I can't actually read the language, so I am trying to help based on what may have gone wrong with the date format and translation.
If you can answer the following questions, it will really help:
- Can you tell me a translated version of the current format?
- What is the problem with the current format? What should the current format of the timestamp be instead?
- What language should the page display?
It's because Echo uses the momentjs localizations for dates and times which are different from the MW ones for no good reason. This is causing other issues as well. It looks like Moment may not have localizations for ce, so it falls back to ru even though MW does have these localizations for ru.