This addon advertises youtube downloads - which apparently work, but when trying to play the entire file, you´ll notice only parts of it were downloaded. Some files even end up with 1KB of data :-[
Then you´ll get absolutely zero support !! Didn´t find any working link on their website which allows you to send them a feedback or ask for support.

Leaving a negative feedback here seems to be the only contact channel for users

** PLEASE STOP FEEDING THEM WITH YOUR MONEY **
Use yt-dlp instead for Youtube Downloads

good product

Reliable everyday helper
I use Video DownloadHelper in Firefox on Ubuntu to download tutorial videos for offline learning (I add subtitles and translations afterwards). Over 100 downloads and it has never let me down — it detects videos on almost any page, downloads are fast, and the settings are clear. No annoying ads or popups. Highly recommended for anyone learning from online courses. Five stars!

Breaks all my youtube.com pages

Very good app. Extremely helpful for downloading videos quickly and easily.

Video Download Helper (VDH) is the best video downloader I've found, and I've tried a lot.

Great vdo downloader

Was a great FREE video downloader for a long time. But now you have to pay after 1 video downloaded from youtube. Uninstalling it due to that. Will come back when they remove that crap.

Not all heroes wear capes.

Habe ständig Downloadabbrüche und sämtliche Downloads werden nicht Vollständig Gedownloadet. Eine Wiederaufname der Downlads ist nicht möglich und wird das Fenster aus irgend ein Grund geschlossen (Update) sind sämtliche Downloadaufträge gelöscht

So Easy! That's the Big Fat Truth!!! I am a reg/user and have no need to look any further... Plug-Play,
Thank You Video Download Helper by vdh.

After the latest paid update, there is no reason to use this.

Amazing way to save videos.

It works much better in Firefox now. Smooth, fast, and clear.