Can I login to Support Center without creating a new account? Japan Codes Updated July 10, 2016 07:40 Follow There is no need to create a separate account for our Support Center. You can use the same account that you have created on Japan Codes to login to our Support Center. Related articles How can I access my Japan Codes account? I can't sign up with my phone number. It says my phone number is invalid. Do I need a phone number to sign up? Can I sign up for multiple accounts? Comments 0 comments Article is closed for comments.