Just got the iPhone 5s on launch day. For some reason every other app I installed gets push notifications - except the official Twitter app (receiving an alert as soon as I receive a mention/retweet/favorite). I've uninstalled, reinstalled, removed it from the notification center etc. and I cant get this app to receive any push notifications. My friend who has an iPhone 5 had the same issue, but after a while it began working for him. Has anyone experienced this or am I just missing something?