How to remove out of stock products from feed
The premium version of WooCommerce Product Feed plugin offers you to remove Out of Stock Products from your feed. There is 2 option to remove out of stock products from the feed. Either you can filter product by product quantity ( watch the above video ) or just select the Remove Out of Stock products? to Yes from the content setting section of feed configuration.
If you want to remove out-of-stock products based on stock quantity then you to make an advance filter.