Login ID is invalid?
– Check the spelling* of the login ID and make sure there is no extra spacing.
*NOT case-sensitive. Either lowercase or uppercase is ok
– Confirm that you’re on the correct KooBits login page (https://member.koobits.com/)
– Can't remember your Login ID? If you are a school plan user, you can check Login ID format. You may also check with your school teacher. If you are a individual plan user (Premium/Standard), you can email to email@example.com to enquire.