Android Development, Firebase. I need someone to help me with issues on my already released app.

[login to view URL] 1. Notification like that of WhatsApp. 2. After clicking the notification of the group chat the app crashes 3. An indication of no. of new messages in the title of the tab "My Channels" and "Chats" tabs and on the buttons of the particular chat (similar to that of WhatsApp) 4. Emojies 5. Reposition everything from 3 dots to Navigation Drawer. 6. The user should be redirected "Profile Settings" when he logs in for the first time 7. Should be able to view the user's profile by clicking on the name of the user in the description of the group. 8. Should be able to edit the description, name and group icon once it's created, by the admins. 9. Should not be able to proceed without setting a group icon while creating it. 10. Few pics cannot be set as a profile pic. Maybe, because they are of a certain format, most probably jpg doesn't work and appears black. Please fix this 11. Facebook login button - visibility is set to gone. Everything else is set. But after login, it doesn't lead to the HomeActivity. 12. A white square background surrounds the profile pic. Remove the background 13. I need buttons to ban groups and users from the app. 14. Material design, UX/UI improvements. 15. The app hangs too often. Please test the app with heavy usage and fix the issues you get. 17. An indication of pending requests at the navigation drawer icon and in it on the Pending Requests button. 18. "Accept Request" should appear at the top. Followed by a line of separation and then further followed by "Request Sent". 19. In the middle of the conversation, the names of the sender changes to someone else's name and then after some time gets back to the original name of the sender. 20. In "All Channels" tab, if the channels are already joined then by clicking it the channel should take the user to the chat activity and not the description of the group