Many site issues can be caused by corrupt cookies or cache. * Clear the Cache and * Remove Cookies '''Warning ! ! ''' This will log you out of sites you're logged in to. You may also lose any settings for that website. Type '''about:preferences'''<enter> in the address bar. * '''Cookies; ''' Select '''Privacy. ''' Under '''History, ''' select Firefox will '''Use Custom Settings. ''' Press the button on the right side called '''Show Cookies. ''' Use the search bar to look for the site. Note; There may be more than one entry. Remove '''All''' of them. * '''Cache; ''' Select '''Advanced > Network. ''' [v57+] Select '''Privacy. ''' Across from '''Cached Web Content, ''' Press '''Clear Now. ''' If there is still a problem, '''Start Firefox in Safe Mode''' https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode A small dialog should appear. Click '''Start In Safe Mode''' (not Refresh). Did this help? While you are in safe mode; Try disabling graphics hardware acceleration in Firefox. Since this feature was added to Firefox it has gradually improved but there are still a few glitches. ''[https://support.mozilla.org/en-US/kb/forum-response-disable-hardware-acceleration How to disable Hardware Acceleration]'' {web link} ----------------- In the event that the passwords information is lost, you should record all information in a separate text file somewhere else on your hard drive, or written down. You can easily copy and paste if you need to do so. If you are concerned about someone else looking at that file, you can compress it using a password.