I tried to add the extension several times, but I get an error every time. It say the download is interrupted. Is there another source for the app? IIRC, I had to jump through some hoops when I first managed to get in on Brave, although I don't remember specifics.

I have been considering trying Ungoogled Chromium anyway, so if you aren't able to provide another source for the app, I may try that on the other box.