I have been using Firefox for decades, and it just suddenly completely changed - I'm assuming after the recent update. I am no longer able to view the bookmarks toolbar. It will not allow me to customize the toolbar (it's a blank page). The drop-down menu for passwords does not work. The drop-down for history did not work, so I did a refresh. Now, there is no drop-down menu (three lines) for history and the home button is gone. The page looks very different and very basic.

Any help is appreciated. I would prefer to use Firefox, but am considering changing default browsers due to this.