no work with https://www.facebook.com/watch/?v=835353556803311

It was a good extention (4 stars) but the new version requires access to all tabs and their content. Sorry, but no. I lost trust in it. Uninstalling.

very good

Useless as teats on a bull. Add-on's icon just links me to the author's website. There are no download buttons on the Facebook video as advertised.

Edit: Fortunately I found out at the link below that you don't even need an extension or external website.
https://www.computerhope.com/issues/ch001625.htm