Hello,
Thank you for contacting Rank Math and bringing your concern to our attention. I’m sorry for any inconvenience this issue may have caused you.
For initial troubleshooting, please follow these steps to flush 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/
3. Disable the transient cache for the sitemap by applying this filter. This will make sure that your XML sitemap always reflects the latest changes on your site:
/**
* Filter if XML sitemap transient cache is enabled.
*
* @param boolean $unsigned Enable cache or not, defaults to true
*/
add_filter( 'rank_math/sitemap/enable_caching', '__return_false');
If you’re not sure how to add this code, you can follow this guide:
https://rankmath.com/kb/wordpress-hooks-actions-filters/
If they are still not showing, you may refer to our guide here for the common reasons why a URL is not getting included in your sitemap:
https://rankmath.com/kb/url-not-in-sitemap/
Looking forward to helping you.
Hi,
thanks for your feedback. Unfortunately none of the steps helped with my problem.
It’s not about caching. I can enable the category sitemap and it works instantaneously.
Also the post and page sitemap can be disabled and enabled and this reflects immediately in the sitemap_index.xml.
Only the tag sitemap does not work at all.
Tags are not empty and tags are not set to “Index”.
BR
Martin
Hello,
We checked your post tag sitemap and we can see it is working properly without any issues:

If you’re still facing the issue, please clear your website and browser cache and check again.
However, it looks like you’re currently using the Rank Math PRO plugin on your website, but the account you have used to open this ticket is the Rank Math free version.
Please search and forward a receipt from FastSpring.com so we can locate your account and verify it.
Let us know how it goes. Looking forward to helping you.
Thank you.
Thanks for coming back to me.
I changed the Tag setting in rank-math-options-titles by disabling Tag Archive Robot-Meta.
Then I realized, the tag sitemap is working but I couldn’t edit my tags anymore.
So, I re-enabled the Tag Archive Robot-Meta and now it’s seems to be alright.
Best
Martin
Hello,
We are glad to hear that this issue has been resolved. Thank you for letting us know. This ticket will be closed now, but you can always open a new one if you have any other questions or concerns. We are here to help you with anything related to Rank Math.
We appreciate your patience and cooperation throughout this process.
Thank you for choosing Rank Math.