First, make sure you are on the latest iOS update. Update to the latest iOS to get the fixes for memory issues.
If you are running an Ad blocker program, Ad Aware, Smart Guard, Avast AVG, Ad Guard or Dashlane applications, turn it off or disable it and try again. We have seen some blockers block the port where winning deals are delivered.
You will also need to have connectivity to the internet in order for it to show. Sometimes a restart of the device will flush out any issues by powering the device all the way off then power it back on.
Reestablish the device's internet connection and see if you get the gold star or Daily Challenge.