Double check that you are using the same email account you signed up with. Also check to ensure your password is correct by clicking "SHOW" next to the password field.
If you are still having issues, you may need to reset your password. To change your password please visit the login page and select "Reset my Password." After selecting "Reset Your Password", simply fill out your email address and click "Reset Password."
If you're running into issues after following these steps, you can always contact our support team for extra help by submitting a ticket here.