I don't receive push notification on my Device Galaxy J7 2015

[AC Question]

no clash of clans , no dragon city , no facebook
in facebook i have to open the app refresh it my self to get notification but the push notifications don't appear i mean no notifications in notification panel
i am sure all apps notifications are allowed
i have checked the battery , nothing is optimized
any solution ?

 

[B. Diddy]

Welcome to Android Central! Do you have Restrict Background Data turned on?

 

[AlphaTango414]

Check Do Not Disturb settings.