Hey, It seems WooCommerce plugin is not active on your wp-admin. Enhanced ecommerce plugin can only be activated if you have active WooCommerce plugin in your wp-admin.

https://periosafe.de/wp-sitemap-posts-page-1.xmlhttps://periosafe.de/wp-sitemap-posts-portfolio-1.xmlhttps://periosafe.de/wp-sitemap-taxonomies-project-type-1.xmlhttps://periosafe.de/wp-sitemap-users-1.xml