Hello, we’re sorry to hear about the trouble you’re experiencing with the Instant Indexing settings. If you’re unable to find the Google API settings under Instant Indexing, it’s possible that you might not have the Advanced Mode enabled in the plugin settings.
To access the settings for Instant Indexing, please ensure that you have enabled the Advanced Mode of our plugin. You can find a tutorial on how to switch from Easy to Advanced Mode here.
Once you’ve switched to Advanced Mode, you should be able to access the Google API settings for Instant Indexing. If you encounter any further issues, please feel free to reach out to our dedicated support team for assistance. We’re available 24/7, 365 days a year.
We hope this helps! If you have any more questions or need further assistance, don’t hesitate to let us know.
Sources:
Making the Most of the Analytics in Rank Math
How to Use IndexNow With Rank Math » Rank Math
Why Google Displays URL Instead of Site Name in SERP? » Rank Math
I have turn on the advance mode, but the interface is different, here is the preview: chrome-extension://ajndhiajffnfkngbocimjhkkcngeheme/Captured.html
Hello,
The URL you shared is currently not valid.
Please make sure that your Instant Indexing plugin is up to date.
If that doesn’t help, we might need to take a closer look at the settings. Please edit the first post on this ticket and include your WordPress login in the designated Sensitive Data section.
Please do take a complete backup of your website before sharing the information with us.

It is completely secure and only our support staff has access to that section. If you want, you can use the below plugin to generate a temporary login URL to your website and share that with us instead:
https://wordpress.org/plugins/temporary-login-without-password/
You can use the above plugin in conjunction with the WP Security Audit Log to monitor what changes our staff might make on your website (if any):
https://wordpress.org/plugins/wp-security-audit-log/
We really look forward to helping 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.