Onesignal Notification not fire when tablet sleep

Hello,

I’m, using Onesignal Notification plugin on my Ionic app to receive notification.

I found one issue that when I turn off tablet screen for a while, the tablet cannot receive notification from Onesignal but when I open the app and try to send it again, the notification is shown…

Anyone got this issue and know how to fix it, please tell me.

Regards.