How do iPoints work?
Just place an order and wait for the points to be credited :)
In your profile you will find a new "my iBody" field where you can check your iPoints balance. At the same time, you can directly convert iBody into a discount code.
This is how the discount coupon looks like, which can be inserted into the box in the cart, where the discount is automatically deducted :)
The code is either copied manually into the box, or you can click on it directly, because it will be waiting for you in orange in the basket as in the screenshot below the text.
The cart will always calculate how many iPoints you will get for a new purchase.