It is strongly recommended to link your game account to your Google/Facebook/Game Center/Apple ID to save your game progress.
Note:
- Google login is only available for Android devices
- Apple ID and Game Center is only available for iOS devices
- Facebook is available for both Android and iOS devices
For lost game accounts, please contact the support team and create a ticket with your commander information (Galaxy Number, Federation Abbreviation, and Commander Name).
Link: Create a new ticket
If your account is linked to your Google/Facebook/Game Center/Apple ID login, please follow the steps in this article on how to load your game data.
Link: How to load my game data?