In case you’ve missed this important info:
"The discount will be added to the shopping cart at the click of a button. From now on, your customers can redeem promos without entering a voucher code. For you this means that you no longer need to mention a code when placing ads and advertising your shop promotions.
This innovation is the first step in an exciting direction for Spreadshop to take in the next year to come! Shop Owners like yourself will get more control over the promotions in your shop."