First, make sure you are playing with the latest version of ASTROKINGS.
Then you can enable or disable notifications by following these steps:
1. Go to the settings menu in ASTROKINGS.
2. Tap "notifications" to toggle notifications on or off.
That's it! You can change your notification settings from the same menu at any time.
If you aren't getting notifications, even though you enabled them from the in-game menu. Then they have probably been turned off in your device settings. Follow the steps below, for your device, to re-enable ASTROKINGS notifications.
Find Apps and tap it open.
Tap on Settings.
Find the Application manager (depending on your device, this can be under the More or Applications categories).
Find ASTROKINGS in the list and tap it open.
Tap on Show Notifications to enable/disable them.