Became paid-only, covered my downloaded video with a watermark in an extortion scam.

Now pay to use.
A QR code is generated on each video downloaded, hiding a third of the screen.

it simply doesn't work

This used to be an excellent add on but now it keeps presenting videos in German, rather than English. I would advise everyone to ignore it until this problem is fixed.

Ainda dá muitos problemas apesar de se informar o autor sobre os problemas, eles persistem sem alteração.

False Promises ... Covers the video you downloaded and asks for payment AFTER u already downloaded !!!!

need extra app installed, barely works lately and now video have QR code need to pay to use

with extra app and licence needed...I mean, really?!

it downloads from YouTube with a huge watermark

Requires paid converter to remove watermark

Can't download anything without adware installed to pc

Dishonest - buying a license will stop ability to download from YouTube. Before purchase of license, it allows download from YouTube (with a large watermark). This bait-and-switch is intended to sucker you into believing the tool will work once you give them your hard-earned cash. If they were honest, they would prevent download before the license purchase, to show exactly what you could expect from this extension.

Bullshit. Doesn't download from youtube. Useless.

一々QR付けるな！要らんわ

Has a massive watermark that now makes this extension useless.

It ask you for a license to properly download.

It was a good add-on until they blocked a quarter of the screen with a QR code to beg for money. It is now useless.

Doesn't work!

This add-on is garbage. Used to work great but now it lets you download a video or two and suddenly the companion app stops working or cannot be found requiring it to be reinstalled. Not worth the hassle.

Mozilla really do need to remove this extension from the "recommended" section. Or maybe even remove it altogether at this point.
Not only do you have to download an app to make it work, it also now adds a large watermark in the corner of every video you download. If you want to remove the watermark you need to pay $28.50!! And oh, quick reminder, you are forking this amount out for a BROWSER EXTENSION!
I honestly wouldn't mind paying for this extension if it was five dollars. Maybe even ten! But paying almost $30 for this is ridiculous. Yet another example of developers who got too greedy.
If you already have this addon installed in your Firefox, and are reading this review, delete it immediately!