The Xperia Privilege app is now defunct. If you try to access the app you will be met with the following screen. As we have already started to see more and more recently, any kind of promotions will now be run via the Xperia Lounge app. This probably makes sense in the long-term as having a dedicated app just for promotions, meant that for many users there were long periods without anything new. Feel free to mourn (or not) in the comments below.