Hello,
Thank you for contacting Rank Math and bringing your concern to our attention.
I’m not quite sure whether I fully understand your concern. But I’ll do my best, and please let me know if I misunderstood.
If you’re referring to the Author name and ID, you can change the author name by changing the Display name publicly as value at WordPress > Users > Profile

If that didn’t help, please share the affected URL so we can check and also the value wish to modify. You can share them in the sensitive data section

It is completely secure, and only our support staff has access to that section.
I hope that helps.
Thank 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.