Its "About" feature show me a Windows that I can't close by hit the "X" button.
Even try to remove this add-ons, that windows still there.
Luckily, I could close that damn windows by using Command + W

Barely works anymore, mostly a waste of time.

Kann immer noch nicht mehr erneuern

К сожалению, не позволяет скачивать сколько-нибудь качественное видео без установки своего крайне подозрительного приложения.

Works, but constantly asking for money/reviews. Grabs focus, changes tabs. Now that I think about it, maybe doesn't work so good.

Pratique à utiliser.

This extension is shady and most likely to spy on your internet activities.

Why?

First of all, there are NO privacy policy stated anywhere. This extensions use "Custom license" which raises even more red flags.

Simply keep to extensions that has a written privacy police, and use more secure license (GNU, Mozilla Public License, MIT)

Here's a list of suported sites: https://www.downloadhelper.net/asites/f/standard/1
(No porn sites supported.. not that I would know...)

It's OK, it can download videos. BUT why didn't say there will be a QR-code in the corner of the video?! 2 stars, nothing more. Use Youtube-dl and ffmpeg instead of this hidden-shareware 'thing'.

The QR code is 3 inches x 3 inches! That's ridiculous, and the $30 price is ridiculous.

Leidert nicht verwendbart. Es will nur installiert werden, wenn FX zuvor installiert wird: und das, obwohl FX iunstalliert ist! Also unbrauchbar.

Does not work on many Youtube videos, and when it does, it creates a watermark and refers to paid premium versin

Yeah, not gonna install a 3rd party software from an unknown source. They should warn this on their description.

Can download movies that other addons cant, but it requires for EVERYTHING a companion app which must be downloaded from the website of the programmer instead of from Mozilla. They could include the functions in the main app or make the companion app available in mozilla. I find it EXTREMELY unprofessional and suspicious when anybody wants me to download something from another place. even more if it is to grant me the BASIC functions of the app!!!

Used to be awesome but no longer works. Support is a waste of time, 1 person answers everything saying it works fine.