ITunes app store being a fail or is it just me?

It’s my first time trying to gift/buy an app in the iTunes store, I’m gifting the Whatsapp app for a friend of mine.

I’ve followed all the step, when I reach to “Buy Gift” it will send me to the “Payment information” page. There I put my security code in and then I’d click done, after that they’d ask me to put my password in but after that it stays on the “Payment information” page it doesn’t tell me that I’ve bought the gift or not.

So should it tell me something if I did bought the app or is iTunes store being a fail?