show product of vendor as per date range

// WP_Query arguments
$args = array(
	'post_type'              => array( 'shop_order' ),
	'post_status'            => array( 'wc-processing', 'wc-completed' ),
	'author'                 => '26',
	'posts_per_page'         => '-1',
);

// The Query
$slrShpQry = new WP_Query( $args );

// The Loop
if ( $slrShpQry->have_posts() ) {
	while ( $slrShpQry->have_posts() ) {
		$slrShpQry->the_post();
		// do something
	}
} else {
	// no posts found
}

// Restore original Post Data
wp_reset_postdata();