Removing product from wishlist after purchase

Hi Marcin

Unfortunately our plugin doesn’t have this option currently
You could remove the product immediately after it has been added to cart from the wishlist, using “Remove if added to the cart” option, under WP Dashboard -> YITH -> Wishlist -> Wishlist Page Options -> Wishlist detail page

Otherwise, if you want a more “gift-list” behaviour, I suggest you to check this topic on our knowledgbase

Please, note that it still needs to be update to properly work with wishlist 3.x
I’m attaching to this answer the update code

if( defined( 'YITH_WCWL' ) ){
	if( ! function_exists( 'yith_wcwl_set_visited_wishlist_cookie' ) ) {
		function yith_wcwl_set_visited_wishlist_cookie() {
		    $wishlist = YITH_WCWL_Wishlist_Factory::get_current_wishlist();

		    if( ! $wishlist ){
		        return;
            }

		    if( $wishlist->is_current_user_owner() ){
		    	return;
		    }

			wc_setcookie( 'yith_wcwl_visited_wishlist', $wishlist->get_id(), time() + apply_filters( 'yith_wcwl_cookie_expiration', 60 * 60 * 24 * 30 ), false );
		}

		add_action( 'template_redirect', 'yith_wcwl_set_visited_wishlist_cookie', 10 );
	}

	if( ! function_exists( 'yith_wcwl_set_visited_wishlist_order_meta' ) ){
		function yith_wcwl_set_visited_wishlist_order_meta( $order_id ){
			$visited_wishlist = $_COOKIE['yith_wcwl_visited_wishlist'];

			update_post_meta( $order_id, '_yith_wcwl_visited_wishlist', $visited_wishlist );
			wc_setcookie( 'yith_wcwl_visited_wishlist', '', time() - 3600 , false );
		}
		add_action( 'woocommerce_checkout_update_order_meta', 'yith_wcwl_set_visited_wishlist_order_meta', 10, 1 );
	}

	if( ! function_exists( 'yith_wcwl_delete_wishlist_item' ) ){
		function yith_wcwl_delete_wishlist_item( $order_id ){
			$visited_wishlist = get_post_meta( $order_id, '_yith_wcwl_visited_wishlist', true);

			if( ! empty( $visited_wishlist ) ) {
				$wishlist = yith_wcwl_get_wishlist( $visited_wishlist );
				$order = wc_get_order( $order_id );

				if( $wishlist && $order ){
					$items = $order->get_items();

					if( ! empty( $items ) ){
						foreach ( $items as $item ){
							$prod_id = $item['product_id'];
							$wishlist->remove_product( $prod_id );
						}

						$wishlist->save();
					}
				}
			}

			delete_post_meta( $order_id, '_yith_wcwl_visited_wishlist' );
		}
		add_action( 'woocommerce_order_status_completed', 'yith_wcwl_delete_wishlist_item', 10, 1 );
	}
}

Maybe you could give it a try and see if it works as you wish ??

Thank you, I will give it a try.