1. Try to re-type your email address and make sure the password/address is correct. Please notice the auto-capitalize and space when you are typing.
2. If the email address and password is correct, please check your Trash or Spam folder. It's easily be recognized as a trash email.
We will create the account or reset it for you.
For your ref:
(*Notice: Do not set automatically forward ALL messages to email@example.com)
Automatically forward Gmail messages to another account: https://support.google.com/mail/answer/10957?hl=en