Hi,
The plugin unfortunately cannot affect the search.php page, that is controlled by the theme you are using. Some themes may support page builders – like Elementor, which may allow some customization to that page.
Turning off features like the date, author etc.. will only turn those off on the live results list.
The settings and the results shortcodes are used to place the settings box and the results container on a separate position from the search bar, like for example here.