WP Super Cache blocking Yoast

Are you certain that you uninstalled SuperCache correctly:

To manually uninstall:

1. Turn off caching on the plugin settings page and clear the cache.
2. Deactivate the plugin on the plugins page.
3. Remove the WP_CACHE define from wp-config.php. It looks like define( ‘WP_CACHE’, true );
4. Remove the Super Cache mod_rewrite rules from your .htaccess file.
5. Remove the files wp-content/advanced-cache.php and wp-content/wp-cache-config.php
6. Remove the directory wp-content/cache/
7. Remove the directory wp-super-cache from your plugins directory.

Also, try to refresh the sitemap with disable >> save >> enable >> save

Happy to hear that.

In answer to your questions, most webmasters use a caching plugin to improve performance. Here is a useful review of (most of) the available plugins: http://wpdevshed.com/best-wordpress-cache-plugin/

Regarding SuperCache, I’ve used it for 4+ years with any problems. Note that with any caching plugin it is important to *exclude* the sitemaps from caching. In SuperCache you can do this via SuperCache >> Advanced >> Accepted Filenames & Rejected URIs >> Add here strings (not a filename) that forces a page not to be cached:

sitemap_index.xml
post-sitemap.xml
page-sitemap.xml

No idea. It could be because you needed to exclude the sitemap_xml strings from caching, and Google didn’t like the cached version. If you’re concerned about SuperCache, why not try one of these, making sure that your exclude any strings associated with your sitemap from caching:

https://ww.wp.xz.cn/plugins/zencache/
https://ww.wp.xz.cn/plugins/wp-fastest-cache/

As it looks like there is not changing content on the site (e.g. blog), why don’t you try manually creating an xml sitemap and uploading it to the root of your site (again, exclude the string from any caching plugin that you may be running):

https://www.xml-sitemaps.com/
http://www.web-site-map.com/
https://xmlsitemapgenerator.org/

Then see if GMP is happy with the file when you test it in the console.

@wplearner01

As mentioned above, it is important to *exclude* the sitemaps from caching. In SuperCache you can do this via SuperCache >> Advanced >> Accepted Filenames & Rejected URIs >> Add here strings (not a filename) that forces a page not to be cached:

In that option insert the string of the main sitemap index and all page/post/tag etc sitemaps. For example:

sitemap_index.xml
post-sitemap.xml
page-sitemap.xml