In order to access your account, you will need to use 2-factor authentication.
2-factor authentication is an extra layer of security that requires you to input a code that only you as a user can provide.
HOW IT WORKS
After you have input your username and password, we will ask you to fill out an "authentication code".
You can get the code either via e-mail or an app: Google Authenticator, Authy and 1Password.
The authentication code is sent via email by default if you have not set the authenticator.
Simply copy and paste the code into the authentication screen.
The authentication code is provided by the Google Authenticator app.
More details on how to activate Google Authenticator
Simply open Google Authenticator and type the code into the screen.