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If you are a Pellcomp user and the Authenticator has been added for you, but you have not set it up yet, the option to verify by Email will be available as well, even if that has not been added as a method for you. This means that you can login and set up the Authenticator. If you are not a Pellcomp user, and only Google Authenticate has been added for you, you will instead be directed to and limited to the Profile section of the hosting site. A notification instructing you to set up Google Authentication will be shown.
Please note that failing to enter a correct code several times will incur a lockout and you will be unable to access your account until the lockout has passed.