Hello,
Thank you for contacting Rank Math, and sorry for any inconvenience caused.
The API is returning a 500 error.
5xx errors are usually caused due to server misconfiguration or other server issues.
Can you please share the website error log with us?
Having the error log file will give a clear idea of why this might be happening.
You can follow this guide to enable debugging in WordPress
https://wordpress.org/support/article/debugging-in-wordpress/ or you can get in touch with your web host, they will help you locate the log file.
Looking forward to helping you.
Hello,
Can you please create a new JSON key and add it to the Instant Indexing settings?
https://rankmath.com/blog/google-indexing-api/#create-new-json-key
Let us know how it goes.
We are here to assist you.
Thanks for your support.
Problem solved ♥♥
Hello,
We are super happy that this resolved your issue. If you have any other questions in the future, know that we are here to help you.
If you don’t mind me asking, could you please leave us a review (if you haven’t already) on https://wordpress.org/support/plugin/seo-by-rank-math/reviews/#new-post about your overall experience with Rank Math? We appreciate your time and patience.
If you do have another question in the future, please feel free to create a new forum topic, and it will be our pleasure to assist you again.
Thank you.