I don't know how VDH did it, but they retroactively put a bunch of watermarks over all the videos I downloaded. Probably their "companion app" ran in the background while I was doing something else, and re-encoded everything with a stupid QR code watermark. So now I have a few gigabytes of video with a QR code asking me to pay $16 to remove the QR code watermark. This is no better than ransomware, and if you're smart you'll avoid this app and report it for abuse.

It did used to be a 4.5* app, these changes are recent.