Yeah, I am having the exact same problem on a MacBook Pro 16" (2021) running an M1 Pro SoC. It hasn't worked for months, even on my old MacBook Pro from mid-2015. The button just does nothing at all. I find it hard to believe that Adobe hasn't been aware of this problem. I left feedback through the extension about this several weeks ago as well. For me, this makes the browser extension practically useless, as I still have to download, move, and rename the files anyway.