由 Daniel Dawson （開發者） 發表於 Aug. 25, 2017 · 永久網址

The word I see is "Legacy". Maybe a difference in localization. Anyway, it needs to be updated to become a WebExtension in order to continue to be supported by Firefox, as all extensions need to be, if they haven't already. Support for legacy extensions is set to be dropped in November. I do intend to make that update.