You can turn on the notifications for the current leg of your StopJetLag Plan by tapping the "Refresh" button.
When you do that, you will then see a dialog with the number of jet lag advice notifications that remain on this leg.
The notifications for your StopJetLag Plan on your iPhone® are designed to be easily refreshed when you touch down in a new time zone.
When you are on your flight your phone will either be in Airplane Mode or completely turned off at the request of the flight crew.
When you land tap the "Refresh" button to adjust your notifications to reflect the new time zone.