I am running a Firefox fork on GNU/Linux that AMO does not recognise. So instead of giving me XPI links it gives me buttons to "Get Firefox Now!".
Digging into the HTML source I can find links to XPI files ending
an-fx.xpi but downloading these and picking the install-from-file route doesn't seem to work. (The plugin installs but doesn't work.) I'm thinking maybe they're for Firefox for Android?
How can I make sure I'm accessing XPIs for the GNU/Linux desktop?