This has been answered and approved, but when a person remains asking yourself why are things a little messed up currently, you will have to read through this: The administration can choose to enable or disable currency and language auto-adjust functions. Also, alter the default shop currency and language from https://www.presta-addons-modules.com/en/front-office/prestashop-social-media-like-block-based-on-selected-categories-languages-pages.html