Hello,
We apologize for the issue you are facing with your sitemap not updating. Here are a few steps you can take to troubleshoot and potentially resolve this issue:
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Flush Permalinks: Sometimes, flushing permalinks can help. Go to your WordPress admin area, navigate to Settings → Permalinks, and click the “Save Changes” button without making any changes. This can refresh the permalink structure and may help with the sitemap.

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Check Sitemap Settings: Ensure that all your posts are set to be included in the sitemap. Go to Rank Math SEO → Sitemap Settings and verify that the options for including posts are enabled.
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Plugin Conflicts: Since you are using the LiteSpeed Cache Plugin, there might be a conflict affecting the sitemap generation. You can try disabling the LiteSpeed Cache temporarily to see if that resolves the issue.
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Check for Custom Canonicals: If you have set custom canonical URLs for any of your posts, those posts may not appear in the sitemap. Make sure to remove any custom canonicals if you want them included in the sitemap.
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Server Configuration: Since you are using OpenLiteSpeed, ensure that your server is configured correctly to handle rewrites for the sitemap. You may need to add specific rewrite rules in your server configuration if they are not already present.
If these steps do not resolve the issue, please reply to this ticket with your site URL so that a human agent from our support team can assist you further. Thank you for raising this concern!
This is an automated reply from Rank Math Support Bot. If you need further assistance, please reply to this topic and a human support agent will reply to you shortly.
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.