I don’t see how one affects the other. tehparadox is how you get the links. Jdownloader (and other options) are how you download the links. Once you have the links, you don’t need tehparadox anymore.
Good news. I think I may have it working. At your recommendation, I went to JDownloader.org and downloaded their version 2 of the software. Windows allowed it to install. Then I went to the “Can’t access tehParadox” instructions in the Google docs instruction guide and followed those instructions, and it seems to be working.
So far, so good. Thank you so much for your help. I’d really love to have an HD version of ANH without dinosaurs.