The only way to restore your lost account is if you have your game profile saved to a Fingersoft ID account or a LEGO® account. 

Please follow these steps to connect your account to the Fingersoft ID service: 

  1. Open your in-game settings from the gear icon on the top-right corner of your main in-game screen. 
  2. Select the Fingersoft ID option from the "Cloud Save" section of the settings page. 
  3. Follow the instructions to sign in with your Fingersoft ID account.

Unfortunately, if you did not save your account before losing it, the progress is permanently lost.