Hello,
We apologize for the issue you are facing with your posts not being added to the sitemap. Here are a few things you can check to troubleshoot this problem:
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Check Custom Canonicals: If any of your posts have a custom canonical URL set, they will not appear in the sitemap. Ensure that all your posts are using the default self-referencing canonical provided by Rank Math. You can remove any custom canonicals to allow Rank Math to generate the correct ones.
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Sitemap Settings: Double-check your sitemap settings in Rank Math. Go to Rank Math SEO → Sitemap Settings and ensure that the option to include posts in the sitemap is enabled for all post types.
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Plugin Conflicts: Sometimes, other plugins can conflict with Rank Math. You can use the Health Check plugin to identify any potential conflicts.
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Flush Permalinks: If you haven’t done this already, try flushing your permalinks. Go to Settings → Permalinks in your WordPress admin area and click “Save Changes” without making any changes. This can sometimes resolve issues with the sitemap.
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Check for Content: Ensure that the posts you want to include have content. If they are empty or have very little content, they might not be included in the sitemap.
If you have checked all these points and the issue persists, please reply to this ticket, and a human agent from the Rank Math Support team will assist you further.
Thank you for raising this concern!
Sources:
How to Configure Sitemaps in Rank Math – Best Settings and Tips
Rank Math Sitemap Issues and Their Fixes » Rank Math
Hello,
Thank you for contacting us and sorry for any inconvenience that might have been caused due to that.
We checked your sitemap and we can see it is showing total 8 posts on your post sitemap.

However, if you face the issue again in the future, please try to follow the steps below to clear your sitemap cache.
1. Flush the Sitemap cache by following this video screencast:
https://i.rankmath.com/pipRDp
2. Exclude the Sitemap files of the Rank Math plugin in your caching plugin. The cache could be via a plugin or from the server. For plugins or Cloudflare, please follow this article:
https://rankmath.com/kb/exclude-sitemaps-from-caching/
Hope that helps and please don’t hesitate to let us know if you have any other questions.
Thank 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.