On an invoice :
1st Step : Bill a product.
On the member's profile > Click on "Bill".
Choose the type of product to bill > Select the product > Click on "Add to invoice".
2nd Step : Apply the coupon.
Click on "Coupon".
Enter the coupon code > Click on "Submit".
The price was well updated.
On a subscription :
In the member's profile, click on "Subscribe" at the bottom right of your screen.
Choose the contract that the coupon applies to.
Click on "Coupon".
Enter the coupon > Click on "Submit".
⚠️ Don't forget to define correctly the behaviour of the coupons for the subscriptions : https://intercom.help/bsport-helpcenter/en/articles/4407377 ⚠️