Add new features to the Android application + admin panel

Hello dear programmers, I need a programmer who is an expert in the type of language in which the application is created and work well with high quality admin panel [login to view URL] app [login to view URL] 1- Adding a feature to block receiving messages between users. 2- user can report annoying people to the admin panel. 3- re-design the home page professionally and in harmony with the application colors 4- Add FAQ page in HTML format 5- Language change repair 6- The admin can reply to users' contact emails through the admin panel 7- Fixed some slowness and smooth movement within the application 8- Fix an error when receiving a message showing the number two instead of one ... and 4 instead of 2. 9- bad words filter 10- Modify the format of the categories list from boxes, and an image appears in it to a branched list 11- The admin can send notifications to all users or one user to appear outside the application on the phone 12- create new professional animated splash screen. 13- When selecting the region, the countries appear first, and after the user selects the country, then the cities appear to him, in alphabetical order. Job applicants must present their previous work models If the programmer's work is good, he will be committed to other work on the application in the future