Is it possible that you are operating Firefox in its automatic private browsing mode? In that mode, Firefox's password manager is disabled. (See second section of the article: Usernames and passwords are not saved)

If you prefer to use private windows, you might find an add-on to be your password manager. There are many... some are compared here: https://en.wikipedia.org/wiki/Comparison_of_password_managers

That button was working a few days ago and I must have done something that caused it to go off. I need to know how to turn it back on. Thanks for the reply. Okie

You could check whether automatic private browsing was turned on. I'd start here:

"3-bar" menu button (or Tools) > Options

In the left column, click Privacy. If the selector on the right side says "Firefox will: Never remember history" change that to "Firefox will: Use custom settings for history"

Then check: is there a checkmark in the box for "Always use private browsing mode"?

If Yes: There's the problem.

If No: Could you check this next:

Open the Properties dialog for the shortcut you use to start Firefox. Either:

• right-click a desktop shortcut
• right-click a pinned taskbar icon, then right-click Mozilla Firefox

Normally, the Shortcut tab is selected automatically but, if not, click the Shortcut tab.

For 32-bit Windows, the Target line should be no more and no less than the following:

"C:\Program Files\Mozilla Firefox\firefox.exe"

If there is anything after that, does it mention "private" or similar?