Someone I know recently showed me that extension. I replied to them with “why bother with a browser extension, just paste the DOI into Anna’s Archive and it’ll show up 99% of the time” and showed it to them on their computer. It then showed a message along the lines of “you can access this file, but not here. Go to this site instead”.
They were signed into their university account. As you use that extension yourself, do you know if that’s normal behavior? I’m afraid the extension flagged this person at the campus IT department or something like that
This gave me a brilliant idea: