Hello,
We apologize for the issue you are facing with the 429 request error while using the Instant Indexing feature. The HTTP 429 response code means "Too Many Requests," indicating that your IP address has sent too many requests to the IndexNow API within a short period. This can happen if you exceed the quota of 10,000 URLs per HTTP POST request or if other websites on the same server are also using up the quota.
To resolve this issue, you can try the following steps:
- Stop Submitting URLs Temporarily: Cease submitting your URLs to the IndexNow API for a while.
- Disable Auto-Submission: Navigate to Rank Math SEO → Instant Indexing → Settings in your WordPress dashboard and deselect the auto-submission options for Posts, Media, and Pages.

- Change Your API Key: If the problem persists, consider changing your API key in the settings and saving the changes. This can sometimes help if your current key is being throttled.

- Clear Cache: After making changes, clear your website cache and wait a few hours before trying to submit URLs again.
If you continue to experience issues, it may be due to other sites on your shared hosting server consuming the quota. In that case, you might want to contact your hosting provider for further assistance.
Regarding your Rank Math plugin disappearing from your WordPress dashboard, we recommend checking if it is still installed by navigating to the plugins section. If it is not there, you may need to reinstall it. You can download the latest version from the Rank Math website.
If you have any further questions or need more assistance, please reply to this ticket, and a human agent from our support team will take over and assist you further.
Thank you for your understanding!
Sources:
How to Fix 429 Error with IndexNow API » Rank Math
How to Fix 429 Error with IndexNow API » Rank Math
Hello,
Please follow our guide here to fix this error:
https://rankmath.com/kb/how-to-fix-429-error-with-indexnow-api/
Looking 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.