This is an import thing in case of user interaction.
This helps to make the site more user friendly and happy customers.
To use coupons with WooCommerce.
- Go to: WooCommerce > Settings > General > Enable coupons
- Tick the checkbox to Enable the use of coupon codes.
- Save Changes.

Create a new coupon by selecting Add Coupon. Or hover over an existing one to Edit.
Enter or generate a Coupon Code. The code is used by the customer to apply the coupon and associated discount. Must be unique as it’s used as an identifier.
Enter a Description (optional) — Info about the coupon for internal use. For example: Name of promotion/event, dates in effect, compensation, ticket number, customer name.
Apply a coupon
