Account linking possible on different OS devices
If you link a social network that supports both Android and iOS, you can use the same game information on each device.

Supported Social Networks
[Social Networks Supported Commonly by Android and iOS]
Apple, META (formerly Facebook), X (formerly Twitter), Discord
(Discord can only be linked and used if the Discord app is installed on the device.)

Important Note
Even if you use the same login information (ID, PW), if the social networks are different, it will be treated as separate game information.