You might want to have this recent article edited:
How to download and watch streaming movies and TV offline
BY RUBEN CIRCELLI, KOMANDO.COM
•
MAY 21, 2020
It says:
The following devices support Netflix downloads:
A Netflix streaming account, and
An iOS device running iOS 9.0 or later, or
An Android device running 4.4.2 or later, or
An Amazon Fire device running Fire OS 4.0 or later, or
Windows 10 Version 1607 (Anniversary Update) or later, and
The latest version of the Netflix Apple iOS, Netflix Android, Amazon Fire, or Netflix Windows 10 app
It makes it sound like any iOS device will download from Netflix. But we know this is not true.
Thanks.