[https://support.mozilla.org/en-US/kb/delete-browsing-search-download-history-firefox Delete browsing, search and download history on Firefox] {web link} [https://support.mozilla.org/en-US/kb/delete-browsing-search-download-history-firefox?redirectslug=Clear+Recent+History&redirectlocale=en-US#w_remove-a-single-website-from-your-history Remove a single website from your history] {web link} Open the History Manager '''<Control> ''(Mac=<Command>)'' <Shift> H. ''' In the search bar, enter the name of the site. Right-click on one of the listings and select '''Forget About This Site.''' This should remove all information, including any site settings '''And Passwords.'''

nope still doesn't work

If you use extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) that can block content (Adblock Plus, NoScript, DuckDuckGo PE, Disconnect, Ghostery, Privacy Badger, uBlock Origin) always make sure such extensions do not block content. *make sure your extensions and filters are updated to the latest version *https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems Firefox shows a purple shield instead of a gray shield at the left end of the location/address bar in case Enhanced Tracking Protection is blocking content. You can click shield icon for more detail and possibly disable the protection. You can check the Web Console for related messages about blocked content. *https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop *https://support.mozilla.org/en-US/kb/smartblock-enhanced-tracking-protection *https://support.mozilla.org/en-US/kb/trackers-and-scripts-firefox-blocks-enhanced-track