Education-hub

/**
	 * Carousel details.
	 *
	 * @since 1.0.0
	 *
	 * @param array $input Carousel details.
	 */
	function clean_commerce_get_carousel_details( $input ) {

		$featured_carousel_type   = clean_commerce_get_option( 'featured_carousel_type' );
		$featured_carousel_number = clean_commerce_get_option( 'featured_carousel_number' );

		switch ( $featured_carousel_type ) {

			case 'featured-category':

				$featured_carousel_category = clean_commerce_get_option( 'featured_carousel_category' );

				$qargs = array(
					'posts_per_page' => esc_attr( $featured_carousel_number ),
					'no_found_rows'  => true,
					'post_type'      => 'post',
					'meta_query'     => array(
						array( 'key' => '_thumbnail_id' ),
					),
				);
				if ( absint( $featured_carousel_category ) > 0 ) {
					$qargs['category'] = esc_attr( $featured_carousel_category );
				}

				// Fetch posts.
				$all_posts = get_posts( $qargs );
				$carousels = array();

				if ( ! empty( $all_posts ) ) {

					$cnt = 0;
					foreach ( $all_posts as $key => $post ) {

						if ( has_post_thumbnail( $post->ID ) ) {
							$image_array = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'clean-commerce-carousel' );
							$carousels[ $cnt ]['images'] = $image_array;
							$carousels[ $cnt ]['title']  = $post->post_title;
							$carousels[ $cnt ]['url']    = get_permalink( $post->ID );

							$cnt++;
						}
					}
				}
				if ( ! empty( $carousels ) ) {
					$input = $carousels;
				}

			break;

			case 'featured-product-category':

				$featured_carousel_product_category = clean_commerce_get_option( 'featured_carousel_product_category' );

				$qargs = array(
					'posts_per_page' => esc_attr( $featured_carousel_number ),
					'no_found_rows'  => true,
					'post_type'      => 'product',
					'meta_query'     => array(
						array( 'key' => '_thumbnail_id' ),
					),
				);

				if ( absint( $featured_carousel_product_category ) > 0 ) {
		
					$qargs['tax_query'] = array(
						array(
							'taxonomy' => 'product_cat',
							'terms'    => esc_attr( $featured_carousel_product_category ),
							// 'field' => 'slug',
						),
						array(
							'taxonomy' => 'product_visibility',
					        'field'    => 'name',
					        'terms'    => 'exclude-from-catalog',
					        'operator' => 'NOT IN',
						),
					);
				}

				// Fetch posts.
				$all_posts = get_posts( $qargs );

				//die(print_r($all_posts));

				$carousels = array();

				if ( ! empty( $all_posts ) ) {

					$cnt = 0;
					foreach ( $all_posts as $key => $post ) {

						if ( has_post_thumbnail( $post->ID ) ) {
							$image_array = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'clean-commerce-carousel' );
							$carousels[ $cnt ]['images'] = $image_array;
							$carousels[ $cnt ]['title']  = $post->post_title;
							$carousels[ $cnt ]['url']    = get_permalink( $post->ID );

							$cnt++;
						}
					}
				}
				if ( ! empty( $carousels ) ) {
					$input = $carousels;
				}

			break;

			default:
			break;
		}
		return $input;
}

In the Customizing panel under the settings section of Carousel Type, when there is no product category selected the carousel keeps displaying the hidden products. However this issue disappears when a product cat is picked. Consequently I suggest you also alter the query when $featured_carousel_product_category is empty or equal to 0. Please add the code below between lines 66 and 67:

					'tax_query'      => array(					
					    array(
							'taxonomy' => 'product_visibility',
					        'field'    => 'name',
					        'terms'    => 'exclude-from-catalog',
					        'operator' => 'NOT IN',
						),
					),