wrong link preview imagen, template author is using first img in article when he should use cover img, but actually there is one in meta tag(it's the same as cover) <meta property="og:image" content="https://www.mexicodesconocido.com.mx/wp-content/uploads/2018/09/sotano-de-las-ventanaa-portada-vela-turcott-DSC_2947.jpg">