Hello,
Thank you for contacting Rank Math Support today and sorry for any inconvenience that might have been caused due to that.
We have a different Google Indexing API Plugin.
You will have to install our Instant Indexing for Google plugin to enable the Google Instant Indexing on your site. https://wordpress.org/plugins/fast-indexing-api/
Here is a detailed guide for setting it up:
https://rankmath.com/blog/google-indexing-api/
Hope this helps. Let us know if you need any other assistance.
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.