Notification Demo not working

I have downloaded the template for the Notification demo from cloud.estimote. It seems that it is only able to detect when I am near the beacon, but not when I am exiting the region. I receive the “Hello World” message on my phone, but can never get the “Goodbye World” message or the “Hello World” message to appear again.

Could someone please provide me a way to fix this. The code is exactly the same as generated through the site in the template.