This is the safest method. It works if you have already "purchased" (downloaded) Netflix on any other device using your current Apple ID.
If you have ever downloaded Netflix on any Apple device using your current Apple ID, you can download a compatible legacy version directly to your iOS 9.3.5 device: Open the App Store on your iOS 9.3.5 device. Go to the "Purchased" tab at the bottom of the screen. Search for "Netflix" in your list of purchased apps. Tap the Cloud icon next to the Netflix entry. Confirm the download netflix ipa for ios 935 link