For an email for the Daily Goal to be a valid it must:

• Have an "@" sign and complete domain (for example, the "superfree.com" part of "[email protected]")
• Contain no spaces anywhere in the email address
• For many device keyboards, you must press the "done" or "enter" button after typing in the email address to appear in the field.
• If entering your email for a Facebook game, you must press "enter" on your keyboard right after typing and before clicking "Submit"

If you're still encountering trouble registering your email, send us a message through the 'Contact Us' feature with the email you're trying to register with.