Hi, I just got a promo code for a 30% discount. So I have found a product in the mobile application for $ 19.99. After adding the promo code, the final price is $ 13.99. I have confirmed. Entered the PIN. And then my bank asked me to confirm the payment of $ 19.99 !!! I AM ABSOLUTELY DISAPPOINTED BY THE IMPUDENCE OF FACEBOOK !!! If I confirmed the payment, I would get the application without a discount !!! HOW IS THIS EVEN POSSIBLE ?!?!