If you're returning to Battle Breakers, have uninstalled the game, or simply want to play on a different account, you can log into the game by doing the following:
If you are already in the game, open the menu using the icon in the top right corner, and select the Logout option.
On the main screen for the game, select the Restore option in the lower right corner.
Then you will be prompted with your login options:
If you are unable to login, or experience any issues please let us know by contacting us.