Update Android App for Downloading video by link and Browsing

I Own a source code written with JAVA and Javascript for downloading videos from Facebook in 2 ways : 1- by post video link and grab the HD and SD source link 2- by browsing facebook with login info and press on any video to start download ===================== my needs : =================== 1- The App is only detect the SD video link and i want to update it to download HD cause some updates for fb 2- I want to make the downloaded video saved by post name not numbers 3- i want to add Rate this APP notification 4- I Want to Update the App to Work for All Android Version 5- I want to Add Firebase and Analytics 6- This APP is using Admob but with too low impressions i want to Update it 7- I want to Add startAPP ADS with admob 8- I want to add simple guide at the start of the app contain about 4 pages with images 9- i want to reskin the POP-UP Download dialog to contain an ad before downloading links you can check this app ------> [login to view URL] 10- this app is also downloading images from single posts automaticly by sliding photos i want to disable this feature and able to download images from home like videos Try the APP which i want to update it [login to view URL]