Hello,
We apologize for the issues you are facing with your sitemap. Here are some steps you can take to troubleshoot and potentially resolve the problems:
1. Flush Permalinks
If you are encountering 404 errors, it’s a good idea to flush your permalinks. You can do this by navigating to Settings → Permalinks in your WordPress admin area and clicking the Save Changes button, even if you don’t make any changes. This often resolves issues related to sitemap accessibility.

2. Check Sitemap Configuration
Make sure your sitemap is correctly configured. You can validate your sitemap using the Validate XML Sitemap tool. If there are any issues detected, it will provide guidance on what needs to be fixed.

3. Ensure Posts Are Set to Index
Check that your posts are set to index. Go to Rank Math SEO → Titles & Meta and ensure that the Index checkbox is enabled for your posts. If all posts are set to noindex, they won’t appear in the sitemap.

4. Review Sitemap Settings
In Rank Math SEO → Sitemap Settings, ensure that you have not blocked any important post types or taxonomies from being included in your sitemap. Make sure all relevant content types are checked.
5. Check for Plugin Conflicts
Sometimes, other plugins can interfere with the sitemap functionality. You can use the Health Check plugin to identify any potential conflicts.
6. Clear Cache
If you have caching enabled on your site, clear your cache after making changes to ensure that the latest version of your sitemap is being served.
7. Monitor Google Search Console
After making these adjustments, monitor Google Search Console for any updates or changes in the sitemap status. If you continue to see errors, consider renaming your sitemap file as suggested by John Mueller, which can sometimes resolve persistent issues.
If these steps do not resolve the issue, 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! We hope this helps you get your sitemap working properly soon!
Sources:
Rank Math Sitemap Issues and Their Fixes » Rank Math
Troubleshooting the “Couldn’t Fetch” Error in Google Search Console » Rank Math