I do not see IDM context menu items in FireFox. How can I enable them?
First please make sure that IDM is properly integrated into FireFox.
Then please check that context menu items for FireFox are enabled in IDM settings. To do this open "Options→General" IDM dialog and press "Edit" near "Customize IDM menu items in context menu of browsers".
Then select "FireFox and other Mozilla based" tab and make sure that all context menu items are enabled.
If it still does not work, maybe there is a conflict with some other browser extension or standalone application (click for details).