Even with Ristechy files, problems can occur. Here are fixes:
: APKs from non-official stores can contain malicious code or unwanted tracking software. Fifa 17 Apk Obb Download For Android Ristechy
This is the installer file that contains the app's code, resources, and manifest. Installing only the APK will let you open the game, but you will likely see a "Download failed because you may not have purchased this app" error. Even with Ristechy files, problems can occur