After you have made changes to your kiosk through the dashboard, you simply have to refresh your kiosk by following the steps below:
1) Click on the AirLoop icon on the bottom right of your kiosk 4 times in rapid succession
2) Choose "Yes, End Kiosk Mode"
3) Refresh the kiosk by holding your finger on the channel that shows under "Select Channel" and dragging it down while holding your finger on the channel
4) You will see a "loading" message that indicates that your kiosk information has been updated
5) Tap on your Channel that shows under "Select Channel" and select "Launch Kiosk"
Your kiosk information is now updated.