There are a few reasons an achievement streak can break:
1. Streaks only count achievements unlocked
Online. (iOS/Android achievements are not unlocked online as are some W8/WP games.)
2. Is your Achievement Streak time zone set to the correct time zone? The achievement streak time zone is set by default to PST,-you can check here -
My Settings3. Achievements won from the previous day are scanned in the next day or scanned out of order and cause an unnecessary break, you can fix this by pressing the 'Rebuild my streaks' button in the sidebar on
any of your streak pages. (
Screenshot of Rebuild button here)