The app randomly stopped syncing products in, and we can't add zip codes to new products now. There are no error messages or obvious way to fix it. I reached out to the developer several times but received no response. Be weary.
Thank you for your Review.
Please note that If you create new products in Shopify after the app installed then you need to click the Manually sync products button in the product list.
Also We have checked your store and found that product "Flower Moon Tortillas and New Moon Mole Set" showing in the product list.