Greasy Fork is available in English.
Allows you to download subtitles from Amazon Video
< Spätná väzba na Amazon Video - subtitle downloader
You get that error because of one of the trailers. 1.7.6 should fix that - you will still get that error but the subs will download. Since the website design changes there's no good way of determining if that error came from something important or not. No plans to change the name of the archive, that's another thing that can break easily because of website design changes.
the new version does what you said thank you :)
Worked great however there seems some issue on TV Series
like Hanna S02 https://www.amazon.com/gp/video/detail/B08BXNWRY3/ref=atv_dp_season_select_s2
strangely it worked fine on Hanna s01
the error dialog said "TypeError: info.catalogMetadata is undefined"
also it would be great if the subs can be saved automatically as Movie Title.zip or Series Title SXX.zip instead of default subs.zip
Using Firefox 80 64 bit along with Greasemonkey