As Germania said, this issue is just a new post that says what was already mainly posted here.
Contacting support does me no good, I have left it up to others as the DRM videos were able to be done in SF, and for some reason it just stopped, I suspect a change in YouTube or it's broke in SF.
I can get most movies from other sites, but it would be nice if SF fixed it, until then either wait or pay for a different program to get the DRM as they CAN be downloaded with NO issues with the right program.
It helps that I still had some contacts who made Cleverget available to me, which does the DRM videos with their YouTube Movies Downloader.
Actually as far as SF it seems after trying for a few days I do remember with the DRM SF had to kick in their version of YouTube Movies Downloader, and it don't seem like that happens now.
So possibly not even a change in YouTube so much as something broke in SF, causing it to not kick in the right downloader that is made to handle the DRM.
I posted what I thought mostly in the other topic, as I can easily get 10 downloaders free for downloading plain none DRM YouTube videos, of course, all use a version of yt-dlp.
But it really can turn people off to SF that we are paying for a lackluster YouTube/YouTube Movies Downloader from SF.