When you call "sendNotificationCustom" without including the 'included_segments' parameter you set it to 'all' by default where it should be 'All' , it is case sensitive in the first case no notifications will be sent even if u get 200 from OneSignal.
When you call "sendNotificationCustom" without including the 'included_segments' parameter you set it to 'all' by default where it should be 'All' , it is case sensitive in the first case no notifications will be sent even if u get 200 from OneSignal.