If you tap on the “More” icon, a new page will open, where you can find the “Account” menu, as well.
Here, you can secure your account and log in either with your Google account or with Facebook.
Securing your account with an e-mail address
If you want to secure the progress of your account, you must link your account with an email address and a password from More > Account > Secure account. After you input the email address, you will get an email which you have to check in order to validate the account.
Once you have done this, you can log in with the e-mail address and password you used to secure your account.
Google Play connect
You can also log in with your Google Play account and keep track of your progress.
Facebook connect
Your Facebook profile name will appear here if you logged in with your Facebook account.
However, keep in mind that your Facebook account is not enough for securing the progress of your account.