Hello,

Thank you for creating the topic.

Could you please provide your web-site url so we can take a closer look at some problems?

2. Place this code to your functions.php file to hide this tab

add_filter( 'woocommerce_product_tabs', 'woo_remove_product_tabs', 98 );

function woo_remove_product_tabs( $tabs ) {
    unset( $tabs['additional_information'] );  	// Remove the additional information tab
    return $tabs;

}

3. Add the following code to the Custom CSS section in Theme Settings

.sku_wrapper { display: none!important; }

4. Here is a tutorial from woocommerce documentation that will help you rename them https://docs.woocommerce.com/document/editing-product-data-tabs/ . Unfortunately, there is no additional tab feature for each product in our theme.

Regards