Model of the webpage should be indexed. Hreflang tags notify the online search engine that many variations of the identical web page exist but all of them En ese caso, habrá que utilizar la rel=canonical aunque su efecto no sea tan notable (o incluso nulo) y enlazar al initial para https://addons.prestashop.com/ru/seo-natural-search-engine-optimization/30904--hreflang-seo.html