Query string is eliminated only when wanted, pagination is retained and managed (an existing "prev/subsequent" mechanism is necessary, more recent PS presently does it) The default homepage title is the identify of the store, and thus the index' title area is empty. If you set written content in the sphere, https://addons.prestashop.com/ru/seo-natural-search-engine-optimization/31857--rich-snippets-json-ld-opengraph-seo.html