If you have set some products in Shopify settings to 'continue selling even when out-of-stock', then such products will not be hidden by the app.
APP WILL HIDE PRODUCTS WHICH ARE SET AS 'CONTINUE SELLING WHEN OUT OF STOCK'
Written by CustomerSuccess
If you have set some products in Shopify settings to 'continue selling even when out-of-stock', then such products will not be hidden by the app.