Once you’ve reskin the project especially after package name / applicationId has been changed, the project structure will be changed, just replacing the updated files without having knowledge in Android Programming in advance will cause the project error dan failed to build the project, because of that, every we release the new update, you need to do reskin the application from begin, please note, update version is optional, update your application if you only find the issue from previous version or want to use all features from new version.