You can control in your app settings whether or not you want to receive push notifications for things such as when you receive a new message or contact request.
- Open the app menu via the button in the top left corner.
- Go to Settings.
- Click on Notifications.
- Check the boxes next to those things you wish to be notified of.
You can then close your settings by touching the arrow symbol in the top left corner again. Your changes will be automatically saved.