sitemap shows 404

Hello,

Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.

Can you please follow these steps?

1. Flush the Sitemap cache by following this video screencast:
https://i.rankmath.com/xXXhDt

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.

That should fix the issue. Please let me know if that does not. We are here to assist.

If that doesn’t work, we might need to take a closer look at the settings. Please include your WP logins in the designated Sensitive Data section.

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.