Google Now integration is unreliable
As things stand, Google have not released an official means for 3rd party apps like Action Launcher to integrate with the Google Now feed. Action Launcher does the best job it possibly can to integrate with and support the Google feed, but users of certain devices (especially when using a custom ROM) have reported the behavior as being unreliable.
The best advice we can offer is to use your device’s standard ROM, and ensure the Google App is up to date.
If Google add an official means for launcher developers to integrate the Google feed, you can be sure we will support it.