I specifically remember that we were told that to make VDH operable after the YouTube lock out several weeks, or months, ago that only the 4 highest resolution viewing options would be available for download. This commonly is 1920 mp4, 1920 mkv, 1280 mp4, & 1280 mkv. Sometimes I get only mp4 options, 1920, 1280, 360 & 200 something. Sometimes I get a 480 mp4 and mvk option if nothing higher is available. This has been the way it is since the lock out. I did get many more options before the lock out. Did you have the limit after VDH came back then it improved to having all the options or are you still limited? I did look to see if I could limit the options to only mp4, something I thought possible in an older version, as this would enable lower resolution options. I could not find a way to do so.
I am on VDH 8.1.0.0a4, Firefox 118.0.2, and MacOS 13.5.2