Hi, do you tried not only to install android studio, also to update your SDKs, NDKs, the Grandle thing etc.?
Iam honest when i tell your that i dont know what the problem of your project is, but try to update all the thirdparty android stuff which unreal uses to package your app!
Check also your security software if it blocks something, happened me one time … 
wasted hours before i noticed it