I don’t remember my authentication code

Good day. I signed up for my Razer ID probably a year from now? And I only reopened my account. I have already changed my number and forgot that I have set up my 2-step authentication using that. I no longer have access to that number, thus I cannot access my 2-step authentication code as well. I am in an immediate need of help. I no longer have access to the back up codes as well. I hope you can help me. Thank you.