These options are located in the Theme Options > Social Share tab.
Social Share tab controls the social share buttons that display in the Post Title Area and the image that will be used for the ‘Social Share Default Image’. If WooCommerce plugin is activated on your site, Social Share tab controls the social share buttons that display in Woocommerce Products Content Area and the image that will be used for the ‘Social Share Default Image’. (Fig. 1)
Social Share Default Image – Illustrated as A. Select a default image file for your social share. Used if a featured image, which is the default image that is displayed when a user shares content to the social media, has not been set. We recommend an image that represents the website.
Social Share Buttons – Illustrated as B. Turn on button to display social buttons in the social share sheet.