Hello,
Thank you for contacting Rank Math, and sorry for any inconvenience caused.
Head over to Rank Math > Instant Indexing > IndexNow API settings > API Key > Change key
Then, clear the website cache and try submitting URLs.
Hope that helps.
Don’t hesitate to get in touch if you have any other questions.
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.