What do I do with Reviews for custom Products?

Custom products are products that exist only in Etsy. This means that Shuttle will have no product in Shopify to assign these Reviews to.
To solve this, you can assign reviews to specific Shopify products through the Reviews page, this will ensure that the reviews are assigned to your preferred products.

Another way to solve this, is to assign the products to the 'Shop', several product review apps allow to assign reviews to the Shop, in case they have no Shopify product to assign to. Shuttle support this feature for compatible product review apps (such as Judge.me or Growave)