Hello,
We apologize for the issue you are facing with your username. Since you have confirmed that the username "evomentum" is available, you can open a ticket requesting the Rank Math Support team to change your username to that.
Please include your request in your reply to this ticket, and our team will assist you further. Thank you for raising this concern!
Sources:
How to Change Your Username in Rank Math » Rank Math
Hello,
As requested, we’ve changed the username for your account. You can check this from your Rank Math Account details page: https://rankmath.com/my-account/edit-account/
Hope that helps, and please don’t hesitate to let us know if you have any other questions.
Thank you.
Hello,
We’re glad that it helped.
If you need any further assistance, please don’t hesitate to reach out. We’re always here to help.
Thank you.