Hello,
I’m sorry to hear that you are facing the "API Error: HTTP 400" issue with Rank Math on your WordPress website. This error typically occurs when the server is unable to process the API request due to various reasons.
Since you have already tried the suggested methods like checking the website status, ensuring the website is not under maintenance, addressing API timeout issues, verifying that API requests are not blocked by the firewall, and confirming that the website is not locally hosted, we recommend reaching out to our support team directly for further assistance.
You can contact our dedicated support team by clicking here. Our team is available 24/7, 365 days a year and will be happy to help you resolve this issue.
If you have any other questions or need further assistance, please feel free to let us know. We’re here to help!
Thank you for reaching out to us.
Sources:
Why Am I Getting "API Error: HTTP 400" Error » Rank Math
How to Fix 429 Error with IndexNow API » Rank Math
Hello,
Could you please share the affected website URL so we can check?
Also, please confirm if you have already whitelisted the IP 46.30.211.100 and the user-agent RankMathApi/2.0.2; https://rankmath.com
If the issue persists, please ask your host for the IP address of your server so we can check if the blockage is coming from our end.
Looking forward to helping you.
Hello thank you for your guidance, we have resolved the issue
by whitelisting URL into our firewall.
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 us 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.
