You can use the El Chronicle account using Google, Facebook, and Naver ID.
The log out, re-install the game, delete the cache/data, or change the mobile device
while the account is not linked, the account cannot be recovered because game data is not maintained.
To keep your data safe, please link your account with Google, Facebook, and Naver ID before using it.
If your account was linked, please re-install the game and proceed with the account link with the ID you previously used.
Then you can recall previous game data.