add discount field to payment form?
I built a payment page (with your help, of course) where the user pays to register to a website and play a game.
This works as expected.
But now the customer would like to add a coupon (discount code) to the form.
I simply would add an input form where the user enters the coupon code. The code can be a static value, so there is no need to handle it with the database. Maybe in the future...
But now it would be enough to just enter the code in the coupon field to set a discount price.
Can I add this feature to the current page without re-do it from scratch?
Here is the page (private):https://www.landgame.eu/xmas-room/registrazione.php
Please note I'm still testing it (so the real payment is 0.01 EUR per registration).
Credentials to see the page are attached as private attachment.
Thanks for any help, Ray.