The following rewrite rules are provided by Yoast SEO in case the "not nice permalink" (example.com/?sitemap=1) is displayed. I have therefore added the lines to the WordPress-Snippet in ISPConfig. But it still doesn't work and I would like to know how to proceed. There are similar rules for other SEO tools: Code: # Rewrites for Yoast SEO XML Sitemap rewrite ^/sitemap_index.xml$ /index.php?sitemap=1 last; rewrite ^/([^/]+?)-sitemap([0-9]+)?.xml$ /index.php?sitemap=$1&sitemap_n=$2 last; Sources: https://yoast.com/help/xml-sitemaps-nginx/
The website you provided yourself has all the info you need. If it doesn't work you probably have a problem in Nginx which prohibits rewrites. What do the webserver logs show?
I guess the problem might be that you just updated the Nginx snippet. But I guess this will not trigger an update for all sites that use it. Try to change the settings on that site, e.g., quota, and press save to see if the site config gets updated then and contains the new snippet code.
