We have added a email account to your '[email protected]' account and it wants you to log in using '[email protected]' instead.
If you are trying to log into google and it won't let you, click on 'Use other Account' and log in as '[email protected]' instead of '[email protected]'
Example: [email protected] is now [email protected]
Next, use your same google password as you had before and you will get in to your account just as before.
The attached video will help you.