You should fix this at/on translatewiki - https://translatewiki.net/wiki/Wikimedia:Wikipedia-android-strings-suggested_edits_edit_streak_detail_text/ru

The message is currently

{{PLURAL|one=%d день|few=%d дня|many=%d дней|%d дней}}

Actually I think this is a real bug in the android app, not related to translatewiki.

https://github.com/wikimedia/apps-android-wikipedia/blob/5881bce4e095821d41381e9fc9e576f2a40d3174/app/src/main/java/org/wikipedia/activitytab/ImpactModule.kt#L63

longestEditingStreak = impact.longestEditingStreak?.totalEditCountForPeriod ?: 0,

[...]

https://github.com/wikimedia/apps-android-wikipedia/blob/5881bce4e095821d41381e9fc9e576f2a40d3174/app/src/main/java/org/wikipedia/activitytab/ImpactModule.kt#L145

Hence longestEditingStreak is a number of edits, assuming totalEditCountForPeriod does what it is supposed to do.

val bestStreakString = if (longestEditingStreak > 0) {
    pluralStringResource(R.plurals.activity_tab_impact_best_streak_text, longestEditingStreak, longestEditingStreak)

However, when you try to decode that resource ...

https://translatewiki.net/w/i.php?title=Wikimedia:Wikipedia-android-strings-activity_tab_impact_best_streak_text/en&action=edit

{{PLURAL|one=%d day|%d days}}

It's passing an expected number of days to translatewiki, not a number of edits.

dbrant opened https://github.com/wikimedia/apps-android-wikipedia/pull/6209

Good catch -- that number is indeed supposed to be the longest streak of days that you've made edits, not the total edits during those days. Not a problem with the localization, just the incorrect number getting plugged in.

Williamrai closed https://github.com/wikimedia/apps-android-wikipedia/pull/6209