Unable to select users for Push Notifications


I have gone through the documentation on iOS Setup for Push Notifications as well as testing Push with curl on my iPhone. I hit a wall, however, when I try to send out a Notification through the Ionic Push dashboard. I have a registered user, but I can’t match up that user in a query when I search for it on the Push/Segment page. Why can’t my user be matched up?

Any advice would be most appreciated. Thanks.