Acquire supports Shopify coupon codes. You can choose to activate or deactivate coupon codes on a checkout link.
Note: Coupon codes cannot be cumulative with built-in discounts.
How to activate/deactivate Coupon handling.
(Checkout Settings > Advanced Settings)
2. Coupons supported
Acquire supports most of the Coupons based out of countries, products, variants, contacts, total order value, order quantity, quantity ratio (buy x get y free).
3. Coupons not supported
Acquire do not support coupon code that is related to Collection or searchID (search query saved in the admin).