Definitly this is a perfect OTT app and everything works perfectly with  somehow  good speed. But still I have problem with notifictions on my Galaxy Note 10.1 2014 device. I expect notification settings for users or groups should overwrite general settings(just like previous versions) but as I disable alert generally and enable it for some of my contacts  no notification is recieved. It overwrites for sound or vibration type but not for having or not having notification.
April 13 2017