In case you accidentally logged out of your account and don't know how to get back in, don't worry! That doesn't mean you've lost it. In such a situation, instead of logging into your account, you may have accidentally logged in as a guest or created a new account.

To log in again, follow these steps:
Tap the home tab and click the ≡ icon under your profile.

 
Select the “Sign out” option.

You will see the home page to access the game, from which you will have to choose how you want to log in to your account.

     
FACEBOOK: If you created your account with Facebook, select the option to log in with Facebook and enter the email and password of your Facebook account.
GOOGLE: If you created your account with Google, select the option to log in with Google and enter the email and password for your Google account.
TWITTER: If you created your account with Twitter, select the option to log in with Twitter and enter the email and password for your Twitter account.
E-MAIL: If you created your account via email, select the yellow button that says “Sign in with email” and enter your email and password.