Push Notification not push to galaxy active 2 when app is in background or not running

Hello everyone,

I had problem when using tizen push service. In my galaxy active 2 - (app id start with 52) the push server dont send.  When app foreground I can receive notification success when register callback in app. But when app not running or in background, the push server dont push to my device like notification in panel.

When I manual open my app, I can receive missing notification in my callback function.

Although I test in my emulator(in tizen studio) with Asia Pacific Northeast (app id  start with 04) I can receive notification in panel of device. 

I dont know why it worked in emulator but in real device it cannot. So Can anyone help me about it? Thank you.

This is document about push server: