Pretty sure you can't use an email address as an ID, so there's nothing wrong with just seeing a username in the ID field. It's the password recovery section that requires an email address with the capitalization you used during account creation, otherwise it spits an error that no account exist with that address.That's not it unfortunately, it isn't even an email set in for the ID.
I'm almost certain passwords have to contain at least one letter, number, and symbol right?
As for the password it should have at least a number and letter. If you've tried 30 times already though you're probably locked out for suspicious activity. Try contacting support and tell them you've forgotten your password and the email address you used to set up the account: https://support.na.square-enix.com/contact.php?id=496&la=1