There was an issue with the Statistics tab for Messaging API channels on the LINE Developers console. Due to an inconsistency in how the system handled timezones, the tab appeared to show different data for certain days than the TSV file that you can generate by clicking Download as TSV.
This problem only affected users outside the JST timezone, and only affected the presentation of the data. No data was deleted or damaged. you'll be able to retrieve and display all data as normal.
# Issue time
Issue inception: November 26, 2019
Issue solved: December 18, 2019
The issue has now been resolved, so you may retrieve and display all data as normal. We apologize for any inconvenience this may have caused.