Been using this for years. Yes, YT keep changing things, trying to prevent downloads, but Dishita are always quick at fixing it.
This helps me download videos in FullHD, avoids any streaming limitations of the internet connection, and it gives me an ad-free video.
YT and their increasing amount of ads is basically a sure way for me to never use YT unless i can get the videos like i do with Easy Youtube Video Downloader Express.
The one-time payment is great, i wouldn't go for a monthly cost, so i really appreciate the quality and value of this service.