Hello,
Thank you for contacting Rank Math support, and sorry for any inconvenience that might have been caused due to that.
Please note that the JSON API key file is only applicable for Google Instant Indexing which is a separate plugin.
https://wordpress.org/plugins/fast-indexing-api/
If the issue persists even after installing the plugin, please share a screenshot of the settings page you see on your end.
Looking forward to helping you with this one.
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.
