https://support.mozilla.org/en-US/kb/websites-say-cookies-are-blocked-unblock-them

Start Firefox in <u>Safe Mode</u> to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is causing the problem. *switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance *do NOT click the "Refresh Firefox" button on the Safe Mode start window *https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode *https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems This issue can be caused by corrupted cookies or cookies that are blocked. *check the permissions for the domain in the currently selected tab in "Tools -> Page Info -> Permissions" *https://support.mozilla.org/en-US/kb/fix-login-issues-on-websites-require-passwords If clearing cookies didn't help then It is possible that the cookies.sqlite file in the Firefox profile folder that stores the cookies got corrupted. *rename/remove <b>cookies.sqlite</b> (cookies.sqlite.old) and if present delete cookies.sqlite-shm and cookies.sqlite-wal in the Firefox profile folder in case cookies.sqlite got corrupted. You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page. *Help -> Troubleshooting Information -> Profile Directory:<br>Windows: Show Folder; Linux: Open Directory; Mac: Show in Finder *http://kb.mozillazine.org/Profile_folder_-_Firefox

I opened FF in Safe Mode and the site worked...closed and reopened in Normal Mode...now it too works. Not sure what fixed it.