Add-on works exactly as expected, including being able to download a couple of files concurrently. It may not be as fast as some other similar add-ons, but manages FHD video with no problems and has worked with ALL the videos I've tried, regardless of video status. It does not, as yet, work with 1440p or the various 4k video types, but I only really use it for 1080p or videos that most other downloaders can't access. The Pro also does mp3 extraction at 256kb/s and 128kb/s, whichever you prefer.
;)