In order to receive text messages on your phone, push notifications have to be enabled.
To check and/or allow push notifications, please do the following
1) Push your home button on the phone, this takes you to the screen where the icons for all your apps are
2) Find the icon Settings and tap it
3) Tap "Notification center"
4) Scroll down and tap Addaline
5) Make sure it's set to have notification style and application icon badge allowed
6) Open the Addaline app, go to More > My account > Sign out. Log back in.
You will now be able to receive push notifications and incoming text messages.