Please ensure you're trying to log in in with your email address and not a username or anything else.
If this still doesn't work, please try resetting your password using this form. Or contacting us so we can manually edit your account details and get you setup.
If you have forgotten your password, enter your email address in the field and click Reset password.
You will receive a new password and a link to sign in. You will be able to change the password later.