There are 4 discount modes in Settings > Discount:
1. Discount Function
Selly uses built-in Shopify functions to offer discounts.
* The recommended mode!
* Compatible with other discount codes as well as other apps
2. Draft order
Selly uses draft orders to offer discounts.
* Somehow affect normal checkout flow.
* Some statistic may be counted as a separated source.
3. Discount code
Selly generates discount codes to offer discounts.
* Loose discount condition.
* Create tons of discount codes.
4. None
Selly only displays offers and adds gift products to cart while automatic discounts are needed to be configured via Shopify discount setting