Though a presentation, this provides the "human-readable" history of how the Playback API was re-architected when rollbacks and outages became frequent in the older, more complex API versions.
To get an older version of the Netflix app for your device, the method depends on whether you are using an iOS/iPadOS device (using IPA files) or Android. For iPhone and iPad (iOS/iPadOS) Netflix currently requires iOS/iPadOS 17 or later netflix ipa old version