This used to be my favourite add-on to download from YouTube. Now, it doesn't allow downloading separate video and audio streams, requiring payment... Really? If I would ever pay to download from YouTube, guess what, I would pay to YouTube for downloading, not to third party. Edit: as of Feb/2023, it's still a click bait.

I just discovered that another add-on has options to enable showing the high resolution file links, making this add-on fully useless.