In order to continue your progress, you must link your account or you must have a [Link code].

※ Prevent loss of data
We recommend you issue a [Link Code] or back up your data to prevent any game data loss from switching devices, losing your device or malfunctions.

■How to link your account
Click on [≡] on the top right hand corner of your main screen → [Link Account] → [Link Account].

【iOS Users】
Use your Apple ID to [Link Account].

【Android】
Use your Google Play account to [Link Account].

【Social Media】
You can [Link Account] with a Facebook/ LINE account.

【Steam】
Accounts made on Steam are automatically linked to Steam account.

※ According to Steam policy, accounts made other than Steam cannot be linked to your Steam account. Please refer to the Steam policy for the details.

■Issuing a Link Code

Click on [≡] on the top right hand corner of your main screen → [Link Account] → [Link Code].
You will be given an auto-generated code, which you can then set a password to.
Once that is complete you may use your [Link Code].

※ Please save a screenshot or memo your link code password.
If you don't know your link code you won't be issued with another and your data cannot be recovered.

All my data is gone.