I'm using WordPress Network/Multisite with the DNS domain mapping plugin and the most recent version of Yoast SEO. The Sitemap function doesn't work anymore, its not generating an xml sitemap at all - just this:
This is a XML Sitemap which is supposed to be processed by search engines which follow the XML Sitemap standard like Ask.com, Bing, Google and Yahoo.
It was generated using the Blogging-Software WordPress and the Google Sitemap Generator Plugin by Arne Brachhold.
You can find more information about XML sitemaps on sitemaps.org and Google's list of sitemap programs.
URL Priority Change frequency Last modified (GMT)
Generated with Google (XML) Sitemaps Generator Plugin for WordPress by Arne Brachhold. This XSLT template is released under the GPL and free to use.
If you have problems with your sitemap please visit the plugin FAQ or the support forum.