This Firefox add-on works great! You just have to know how! After installing this "add-on" in Firefox, you visit the "GitHub directory" of the client, as it is described here in the description of this Firefox extension. One downloads the "Windows.zip", saves this to a place e.g. C:\Programs\JD-Client (This folder must be created) and copies the "content of the Windows.zip" into this directory! After a double click on the "install.bat" the cache and the cookies of the Firefox browser must be deleted!

Afterwards please restart the PC once! Since registry entries are created! In addition, under "Settings - Add-ons - Extensions" (the 3 dashes on the side, then on Add-ons) must be set in the settings of the JDownloader add-on still under permissions the small "switch"! ONLY THEN this works! And that excellent! If you rate this extension badly, you are most likely not using it correctly! Bad ratings due to user error find I honestly a horror! I see this (unfortunately yes really unfortunately!) Again and again and not only here!