Not work for authenticated sites... not send http auth and cookies to fdm....

IT DOES NOT WORK !!!!!!!!

Completely not works for me, even after install the component in "windows.zip".
Check connection always told me no native client . Windows 7 x64 + FF57

Somehow, I found out that FDM 5.1.33 has been released, as it claims working for FF57.
After FDM 5.1.33 installed & enable extension in its setting again, everything works as old day.
https://image.prntscr.com/image/VM7RUK25TN6VTN10CmCImQ.png

FDM 5.1.33 official release
https://www.freedownloadmanager.org/download.htm
http://www.freedownloadmanager.org/board/viewtopic.php?f=1&t=17363&p=41704
- Added Firefox 57+ support.

I installed the app, installed the "native client" and clicking on downloads did not pass them to FDM, they just downloaded as normal. This addon is not developed by the official FDM team and the whole thing seems a bit dodgy to me.

This new version works nothing like the old version. It's like it is not even the same program.

if it doesn't increase download speed then this is just a redundancy.