Greasy Fork is available in English.
Allows you to download subtitles from Netflix
< Feedback on Netflix - subtitle downloader
How about you read some other discussions that reported the exact same thing?
https://greasyfork.org/pl/scripts/26654-netflix-subtitle-downloader/discussions/94593
https://greasyfork.org/pl/scripts/26654-netflix-subtitle-downloader/discussions/94566
https://greasyfork.org/pl/scripts/26654-netflix-subtitle-downloader/discussions/95002
Just opt out from tests: https://www.netflix.com/DoNotTest
Today Netflix uppdated UI please update script.