A Google+ login option is currently available on the Flixster website but not across all platforms. We hope to add this feature to more devices in the future.
To access your account on devices that don't have a Google+ login button, you'll need to set a new password.
Login on the Flixster website and select Collection from the left sidebar. You'll see a link prompting you to create a password. You can also set a password on your Account page.
Setting the password will allow you to log in as a regular Flixster user with your email address as the username.