To tie your in-game account to an email address, please proceed:

1. Go to the Garage tab
2. Tap the Profile tab
3. Choose Edit/Switch Profile
4. Tap the Email section, then enter and confirm your email

The message with a confirmation link will be sent to the email address you have entered. Follow the link to set this email permanently for recovering your password. Beware, that you can’t change or untie your email in the future, it is made so you could use recover password feature no matter what happened with your account.