Very odd. All of the data is server side, so its just a matter of making sure the iOS app does a full pull from the server. It's still there when you check the web dashboard, right? (I assume so based on what you just wrote).
It's overkill and you shouldn't have to, but just as a sanity check, could you delete the app from your iOS device, then re-grab it from the App Store? You'll need to log back in on first launch of the reinstalled app, but that should definitely grab the latest from the server.