The iOS app does not appear to be sending push notifications to my iPhone 5c running iOS 7.1.1 anymore.
I'm not sure exactly when the notifications stopped showing up, but I do recall rebooting my device at least once over the weekend. There was also a data center migration that took place during the weekend. I don't know if either of those might have caused it.
I've checked my notification settings and everything is enabled.
I've also tried deleting and reinstalling the app, but still no notifications show up. If I wasn't on the latest version already — which I'm pretty sure I was — I most certainly am at this point. The Help view says I'm on version 1.0.1.