While Gary Illyes, a Google analyst, believes that engines like google might rely fewer on hreflang and a lot more on automatic language detection Down the road, for now, the tag is our greatest wager.  The JS redirect looks like some a messy scenario, but to answer your issue: For https://addons.prestashop.com/pl/seo-pozycjonowanie-naturalne/31857-automatyczne-google-rich-snippets-json-ld-opengraph-seo.html