What element do you get if you check the password field in the Inspector?

You can right-click and select "Inspect" to open the built-in Inspector with this element selected.

• https://firefox-source-docs.mozilla.org/devtools-user/page_inspector/how_to/open_the_inspector/
• https://firefox-source-docs.mozilla.org/devtools-user/page_inspector/how_to/examine_and_edit_html/

Please see the attached .jpg screen capture.

I notice a disabled="disabled" attribute at the end of this input line what will make it impossible to type in this field. It is possible that this field will get enabled if you enter a valid User ID. If I check this page then this login form looks rather complicated.

Are you using content blocking extensions that could block JavaScript or otherwise interfere ?

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