Hello,
Thank you for contacting Rank Math, and sorry for any inconvenience caused.
The status code 429 indicates that you are trying to send too many requests and you should slow down a little bit and retry later.
You can try to change the API Key and see if that helps.
Go 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.
I am unable to change API key directly from your plugin but I already created a API key using Google Cloud Console and uploaded it in Google API Settings
You can Check Following Details:
Google JSON Key:
{
“type”: “service_account”,
“project_id”: “information-glob”,
“private_key_id”: “25fc1c6f01cf47553cad5e63833a6826e2504f47”,
“private_key”: “—–BEGIN PRIVATE KEY—–\nMIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQCxOORm5F03y9sH\nGP10P+zReF2ayJBA8/H/1RtufE9m1BSdHUadhsDQ+rZpRMO78zem82R3HuhcGbvm\nwAs4BCr438PlJAWTJXXN66vetAS2JaTLrKTMR2gRCuoprL+jBd7tQ9B3T/arzQ8K\ndwYQ1+cmPUWbTf7ySWzxCV0s/VCmdDFmqTV+f2gcrs9IoMEIXQ9Ndi/A6t89gTmf\npeTEcP7mbVk4z2mVd5KvvvMKm9qNxudj9r7oyayCr5n+8jXcHviSYMHokntlBw5/\nFBRIXLIxnoOd1VFbwTpfO4JW9fjJDVS8UnPc3ENc9dBMXd5ULAQHlDjnyBXPs3gF\nuKPym9gdAgMBAAECggEABRTvzbiCKMmubelsSSNVH9uO+ZODOW2VVKPwfa5QW488\nyRWQEw/MYyGxTdr0LuVGRQIJMTZAbPWq8u6yU6ig79KAzEcIZuQF2QIHQ2NPmEaD\nj3iToCzzAbwZo1jKBPtz3UNazLUNCneelQr9MEn0nZ7XqmCl7R4oYtAFLTdVUvSJ\nRkjEEDS7XWWgPc5U2F+IIIxVw58VcE74zOS/Py+oPDjpKtFvuje54/0eUTV/uPOD\nTewEQPNfX7fH6NLLIxEVJSXskxPFjNv96L8Nf2lB1fYwdcdKGjBCJ9RuogGZJf6d\nmBlyjeLYlAylV4XsWr41QUepYa0almBbmX+wSFB5yQKBgQDcAX3WbiLrdg2MPstc\nMLcMUH0gBl9vG0hRzL77mLDypF6j0v32Ap0S5hjNgUqhRoFBzTMYIbuXduSyTknN\nCYBSIDd2Zedo8ZNOl7m2rP+whO93N7mm1/NjriP5MnvSj33ZS46Gype+LiwNiW6l\nGq23/mW2ZNAHiDED+/BmUOTv9QKBgQDON36gFLbcvWF0s5fvoJiyGA18k/rT1KeS\nvGJpz150JUtPO3AuUQeBsxpFO2wATyzRs1PjrKTw1QJded4wg06fmnC246WjyOSt\nYPj//dGmNDlK/5liLsA0D8pEdatoUK7Eh5yAjp7GG6bvqJKs9XDPoWPR2bZB6T/p\nLUNznDr2iQKBgQDZ9iBVcIfn/u0tJIkUrK6s5JESST4DNWRQpigP2xZzTaT1aPNx\n5uT29D9eWdk2LkOgjUsxfTn8tS2d+THkkKUwt/o6snqw3aSzGF5FPN+UYh9cXTjw\nssHO35eEKx/BW6eyv8hUgiITqGq8fou/xs6UmtTp/raav7LP36ors7kcgQKBgG6m\n/H0tYEnmHMsgKyDbzdOScHoudWMBMsHb7/rS2N39vQFQ5YsU07BWyHvpvLQVx/jl\n/temJgNMaS57XCwv6RpfJqgcUx8lhv85j6LdMYe7chq6ODWk3GGTL3e4pDcfRAgU\ntHePD8dBwzvJ+ppwQQ5IjWVnKxMG89JNBWqdpE3xAoGAf7/UjsCAGzIYIXHMWZRq\nAuYw/k2dlMfrL4kcxZ3KoqOPWdjHxhhMW+K1n5DOs0wpvFs+rg/OQYpEssRUY5rc\nOOs9RsUdiNyh2ZitEGmM7I/a24uoAXXWgE7WWae+0FJyXW8dQfrKGZ/rT53xAaW/\nCdUKgOzjLQEJwbKUv9oxUWs=\n—–END PRIVATE KEY—–\n”,
“client_email”: “i***************@i***************************************”,
“client_id”: “110316131158666703084”,
“auth_uri”: “https://accounts.google.com/o/oauth2/auth”,
“token_uri”: “https://oauth2.googleapis.com/token”,
“auth_provider_x509_cert_url”: “https://www.googleapis.com/oauth2/v1/certs”,
“client_x509_cert_url”: “https://www.googleapis.com/robot/v1/metadata/x509/information-globinformation-glob.iam.gserviceaccount.com”
}
Hello,
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.