[Q] Greenify on Color OS topic

Hi Guys,
@oasisfeng thanks for your app.
I'm on Greenify Donation Package on
Color OS 2.0.5i Beta (4.4.2)
device is rooted
set on root permission for the app
set on autostart and set the app like security ok (I trust this app)

randomly, when I open the app I see the notification that the app was blocked by security settings and it doesn't ibernate correctly.
Do anyone know what I wrong on my settings?
Thanks for your responses.
Regard