Hello,
Thank you for contacting Rank Math, and sorry for any inconvenience caused.
Please follow these steps to fix the issue:
https://rankmath.com/blog/google-indexing-api/#num-6-2-403-permission-denied-failed-to-verify-the-url-ownership
Don’t hesitate to get in touch if you have any other questions.
I have already added that owner to my search console account. It is to inform you that I migrated my site and I have all the details of previous website while I set instant indexing api key. Is that the problem? What I have to do?
Hello,
In this case, please remove the plugin, then install and configure it again.
Let us know how it goes.
We are here to assist 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.