Want to make it easy for your customers to apply a promo code at checkout? Read this post on how to add a coupon code field to your WordPress forms.
Discount Codes
How to Move WooCommerce Coupon Field in Checkout Page
How to Easily Add a Coupon Code Field to Your WordPress Forms
6 Best WordPress Coupon Code Plugins for Your Online Store
/wp-content/uploads/2018/11/best
How to Create Coupon Codes for My WordPress Payment Form
Which WooCommerce hook do I need to use to place the coupon field after the checkout sidebar - WordPress Development Stack Exchange
Interactive Add-on: Gift Code Sticker, game gift code
Coupon Codes 123FormBuilder Knowledge Base