Coupon - only read then click

I bought as many the Fire game controllers and wanted to give me, so download the free, App. But the voucher must, unlike else, redeem it. If you know it quite simply:
-Unterhalb The large button
Click -the little long text
Redeem discount voucher number from the email
-Buy

Could it unfortunately not try myself as I proceeded to the usual way of a rogue AMAZON subordinated intention, but we scared away good customers. Since Amazon knows who bought the controller, you could without problems, the "run behind light Customers credit the sum.