There is neither an icon nor a list, this extension does not work at the moment - too bad!

You need to
A. Make a right click download option
B. Make a highlight link selection option
C. Make hyperlinks visible to the downloader
D. Make all forms of media AS WELL AS multi page hyperthreads visible to the downloader
As this product is, although I see potential, until these issues are addressed it is just click-bate.
I WILL change my review to 5 stars if you can fix this add-on

Despite the terrible reviews I gave this a try. Using FF 57 (64-bit). The screenshot provided shows an icon in the address bar that is not visible on my browser. Tried installing a couple of times, exited, re-entered browser and still the icon does not exist.
The WIKI for the add-on does not provide any information related to this issue.
Uninstalling...

If it does anything at all, I can't see it! How about making screenshots + step-by-step instructions MANDATORY FOR ALL PLUG_INS? Not FAQs, actual, indexed, searchable instructions, including TROUBLESHOOTING TIPS?

Quality control appears to be non-existent at Mozilla lately. The "new-improved" product is glitchy and plug-ins are iffy. Uninstalling this one.

I hoped that maybe the other reviewers were missing something, but the icon never appeared for anything that I was trying to download. Useless.

No icon. I restarted FF, still no icon. Just no icon?????

Icon nowhere to be found, even with the default Firefox's theme.

Another piece of shit offering by Firefox. Mozilla too busy celebrating release of the God awful 57 Quantum that has crippled my browser and removed all add-ons that can download music, videos, and images...NOW I GOT SHIT! Thanks, Mozilla...go to fucking hell!

No icon, no drop-down, no pop-up, no nothing! No zero stars available so I have to give it a 1 to submit. A complete waste of my time. Doesn't Mozilla review this sort of thing before they put it up on the site? I've been using this browser for decades but I'm starting to question Firefox (Mozilla's staff) it's self...