Hello,
We apologize for the issue you are facing with changing your username. To change your username in Rank Math, you will need to check if the desired username is available. You can do this by copying the following URL into your browser and replacing username with the username you want:
https://support.rankmath.com/users/username/
If the browser returns an "Oops! That page can’t be found" error, it means the username is available. In that case, you can open a ticket requesting the Rank Math Support team to change your username.

If the browser returns a profile page, it means the username is unavailable, and you will need to create a new one.

Thank you for raising this concern. If you have any further questions, please feel free to reply to this ticket, and a human agent from our support team will assist you further.
Sources:
How to Change Your Username in Rank Math » Rank Math
Hello,
Thank you for contacting support.
We have changed the username to the preferred one mentioned in the sensitive data section.
Don’t hesitate to get in touch if you have any other questions.
Perfect – thank you, Miguel! 🙂
Hello,
Glad that helped.
Please feel free to reach out to us again in case you need any other assistance.
We are here to help.
Thank you.
Hello,
We are glad to hear that this issue has been resolved. Thank you for letting us know. This ticket will be closed now, but you can always open a new one if you have any other questions or concerns. We are here to help you with anything related to Rank Math.
We appreciate your patience and cooperation throughout this process.
Thank you for choosing Rank Math.