If you can't log in there are a couple of things you can try!
First, try to reset your password, click here to find out how to do so.
Secondly - If you have previously logged in using your google account, you will not need to enter in an email and password. You will need to log in by clicking "Continue with Google".
If you have logged in for the first time this way, you will not be able to log in with an email and password.
To log in via Google, see below below steps:
1) Do not enter your email and password, instead, click "Continue with Google". See below:
2) Next click on your google email address that you wish to log in with. (See below example)
Or click "Use another account" if you have another gmail address you would like to sign in with.
If your browser is already signed into Google, you will not need to enter in an email address.
If your browser is NOT already signed into Google, you will need to enter in your email address password.