[orca-list] Installing Firefox Extensions

[Matt Dizak <matt dizak gmail com>]

Hi folks,

Bit of a weird question, but any tips on how to install Firefox
extensions via Orca?  Need to install the MetaMask extension, so I
head over to the page at:
    https://addons.mozilla.org/en-US/firefox/addon/ether-metamask/

Click that "Add to Firefox" link, and I can hear the popup box come
up, but for the life of me am unable to navigate to it.  No matter
what I try, I can't seem to get screen reader to focus on that popup
so I can install the extension.

Anyone know what I'm doing wrong?

Thanks,
Matt