Greasy Fork is available in English.
Adds the option to export subscriptions from YouTube as an OPML file of RSS feeds.
< Feedback on Export YouTube Subscriptions to RSS OPML
Please submit feedback (and provide more information) on GitHub, not here - I don't check these reviews often.
I did release an updated version of the script recently (v1.7) that likely resolves this issue, so I'd try that first.
does not work in chrome Aug 2021