App Rejection - First Time Upload - Need Help

Hi Guys,

We uploaded an firebase chat application some extra features.
App Features

-Firebase Real-Time Chat
-Mobile Number OTP Verification
-Group chat
-Image Sharing
-Emoji Sharing
-Message Seen Status
-Message Sent Status
-Last Seen Status
-Online & Typing
-Mobile Phone Contact Sync
-Local Chat Storage[ Messages available without internet]
-Realm Database
-User Avatar Setup
-Professional Material Design
-Clean User Interface
-Cloud Notification on New Message
-Easy firebase Setup

Please download the apk from bit.ly/DLchatzilla

Can someone help me with the reuqired changes
Comment from Evanto “This item has a nice concept, but doesn’t feature the required functionality and features to be approved as a premium item. Consider expanding the feature set here.”