add_action('template_redirect', function() {
    if (!is_user_logged_in() && !is_admin()) {
        wp_die(
            'Estamos trabajando en la web. Volvemos pronto.',
            'Sitio en mantenimiento',
            array('response' => 503)
        );
    }
});
<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="//guimonto.com/wp-content/plugins/wordpress-seo/css/main-sitemap.xsl"?>
<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
	<sitemap>
		<loc>https://guimonto.com/post-sitemap.xml</loc>
		<lastmod>2023-03-21T17:25:10+00:00</lastmod>
	</sitemap>
	<sitemap>
		<loc>https://guimonto.com/page-sitemap.xml</loc>
		<lastmod>2023-03-21T17:29:59+00:00</lastmod>
	</sitemap>
	<sitemap>
		<loc>https://guimonto.com/product-sitemap.xml</loc>
		<lastmod>2022-12-27T15:26:54+00:00</lastmod>
	</sitemap>
	<sitemap>
		<loc>https://guimonto.com/category-sitemap.xml</loc>
		<lastmod>2023-03-21T17:25:10+00:00</lastmod>
	</sitemap>
	<sitemap>
		<loc>https://guimonto.com/product_cat-sitemap.xml</loc>
		<lastmod>2022-12-27T15:26:54+00:00</lastmod>
	</sitemap>
	<sitemap>
		<loc>https://guimonto.com/author-sitemap.xml</loc>
		<lastmod>2022-11-01T11:44:28+00:00</lastmod>
	</sitemap>
</sitemapindex>
<!-- XML Sitemap generated by Yoast SEO -->