Blocks sitemaps when active

I found this plugin useful because it allows customers to easily add products to their cart. However, there is a major drawback — it blocks the SEO plugin sitemap. When the plugin is active, my sitemap (sitemap_index.xml, product-sitemap.xml, and all ) shows errors, but when I deactivate the plugin, the sitemap works fine. Please fix this conflict, as the plugin would be much more valuable if it didn’t interfere with SEO plugins.