Video Download Helper (Both Firefox and Chrome) won't operate in legacy mode.
https://chromewebstore.google.com/detail/video-downloadhelper/lmjnegcaeklhafolokijcfjliaokphfk
on other browsers, it will convert to an older interface for configurations.
Usingg Orion, the extension goes dark and doesn't enable. Only way to get back to operation. Remove and reinstall.
Version 0.99.130.1-beta (WebKit 621.1.2.111.4)
Sequoia (15)