What Should I Do If It Shows "The Serial Number Does Not Exist" When Registering the Product?

Please make sure the serial number and registered password you input are correct. Please pay special attention to letter “O” and number “0” and letter “I” and number “1” also. Even though there is a serial number on the back label, please always use the one you found by selecting Setup>About

Make sure there is no blank space before/between/after the digits you input.