Amazon – Kindle app delete parts of streak by itself

Try this:

1. Put the phone/device in Airplane Mode to turn off your internet / mobile connections.
2. Turn off Auto date/time. Change the date to the missed date.
3. Open the Kindle app. Read a few minutes, close the book (leave the app open).
4. Turn auto date/time back on.
5. Turn off Airplane Mode.
6. Sync the Kindle app.
7. Wait until the amazon servers update. (Do not read during the hours of Midnight and 3AM Eastern, won’t update).