Hello,
Thanks for contacting us, and sorry for any inconvenience that might have been caused due to that.
The most possible reason can be that your sitemap is heavily cached. Can you please try following the steps below to see if that works for you?
#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. If the above steps doesn’t seem to work, kindly apply the following filter code to your site.
add_filter( 'rank_math/sitemap/enable_caching', '__return_false');
Here’s how you can add filter/hook to your WordPress site:
https://rankmath.com/kb/wordpress-hooks-actions-filters/
Let us know how it goes. Looking forward to helping you.
Thank you.
Hi Sakib,
I tried all the mentioned possible solutions from you but unluckily nothing works work.
Can you please help me with some other solutions.
Thanks in advance
Hi Sakib,
Forgot to mention 1 thing that this is happening with only post_tag-sitemap.xml for the rest it is working fine.
Hello,
As the proposed solution didn’t work, we might need to take a closer look at the settings. Please edit the first post on this ticket and include your WordPress & FTP logins in the designated Sensitive Data section.
Please do take a complete backup of your website before sharing the information with us.

It is completely secure and only our support staff has access to that section. If you want, you can use the below plugin to generate a temporary login URL to your website and share that with us instead:
https://wordpress.org/plugins/temporary-login-without-password/
You can use the above plugin in conjunction with the WP Security Audit Log to monitor what changes our staff might make on your website (if any):
https://wordpress.org/plugins/wp-security-audit-log/
We really look forward to helping you.
Hi Sandeepan,
Due to some security issues i cannot share you the credentials but can share you the RankMath each page screenshot, will that work for you?
Thank in advance
Hello,
We respect your privacy and decision. Before we go into that, let’s try these if these solves the issue.
Are you using any custom code or plugin that enforces relative URLs anywhere on your website?
Just to be sure, we would like to rule out any plugin or theme conflicts that may occur. https://rankmath.com/kb/check-plugin-conflicts/
Let us know if you find anything conflicting the plugin.
Thank you
Hi Sandeepan,
I’ll have a look at it again on monday and will update you by monday eod then accordingly we can decide the next approach.
Thanks in advance
Hello,
Sure! Let us know how it goes.
Meanwhile, please don’t hesitate to let us know if you have any other questions.
Looking forward to helping you.
Thank you.
Hi Team,
The issue is being resolved now, actually theme was blocking it.
Anyways thank you for your support
Hello,
We’re glad that we could address your concern.
Please feel free to reach out to us again in case you need any other assistance.
We are here to help.
Thank you.