Doesn't work

Doesn't work.

use "Downr YouTube Downloader" instead. Search for it in addon store.

addons.mozilla.org/en-US/firefox/addon/downr-youtube-downloader/

ZERO stars. besides sending your credentials to a 3rd party, does nothing.

doesn't work

nie działa

Doesn't work on age restricted / private browsing

Junk, does not work.

downloads fail

It completely DOES NOT WORK

Кнопка "+Скачать" под видео есть, но при попытке ей воспользоваться - не ничего не скачивает, завершается с ошибкой.

Download nicht möglich

Funktioniert einfach nicht - Download fehlgeschlagen

Only download option is "Normal MP4" - and the download instantly fails at 0 bytes.

Does not work

Grayed out while in YouTube (i.e., nonfunctional).