Hello,
Thank you for contacting the support, and sorry for any inconvenience that might have been caused due to that.
Our website doesn’t have the feature to change your username on the account’s page at the moment.
We can however change your Rank Math account username for you.
What would you like to change the username to? We need to make sure that is available and not taken by anyone else.
Looking forward to hearing back from you.​
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.