Hello,
We apologize for the issue you are facing with your sitemap not updating. Since you’ve already taken several steps like clearing the cache, resetting settings, and re-saving permalinks, let’s ensure that the sitemap cache is flushed properly. Here’s a step-by-step guide to regenerate your Rank Math sitemap:
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Flush the Sitemap Cache: Go to Rank Math SEO → Sitemap Settings and adjust the Links Per Sitemap field (for example, change it to 201) and then click Save Changes. This action forces the sitemap cache to regenerate.

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Flush Permalinks: After saving the changes in the sitemap settings, navigate to Settings → Permalinks in your WordPress dashboard and click Save Changes again without making any changes. This refreshes the rewrite rules and can resolve sitemap accessibility issues.

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Check for Exclusions: Ensure that none of your posts are excluded from the sitemap settings. You can check this under the Sitemap tab in Rank Math settings.
If you have followed these steps and the sitemap is still not updating, please reply to this ticket with your site URL so we can assist you further. Alternatively, if you want to ensure everything is set up correctly according to the latest SEO standards, consider our professional setup service available at Rank Math Services. This service requires a PRO subscription and is designed for users who want comprehensive assistance.
Thank you for raising this concern, and we hope this helps resolve your issue!
Sources:
How To Exclude Rank Math Sitemaps from Caching » Rank Math
Rank Math XML Sitemaps on NGINX Servers » Rank Math
This is an automated reply from Rank Math Support Bot. Your ticket has been assigned to a human agent and we will get back to you shortly.