Board Thread:General Discussion/@comment-35065776-20180723121541/@comment-38946466-20190725182307

This happens when game data gets deleted or corrupted or when the app gets uninstalled/reinstalled.

Can happen with some overzealous apps for cleaning space on your tablet, or if you unplug SD card and the app data is there...

Mytona does a backup so always say yes if they want to restore progress. The DQ will get reset but that is a small price to pay I think. Facebook is not a bad second option, but it doesn't save friends that are not on Facebook and doesn't save data about rubies. Mytona is really your best bet for recovery.