Effects all greyed out

Yes, I pressed STOP so I am not in Pause Mode.

The effects all worked a few minutes ago. Now none of them do.

What is going on?! This is infuriating.

What version of Audacity are you using? What version of macOS?

Some earlier versions of Audacity would allow the project window to move in front of a modal dialog. Try moving the main project window aside and see if there is a dialog box behind it.

– Bill

Yes, it is that simple. Thanks!

The latest Audacity does not allow the project window to move in front of a dialog. I recommend that you upgrade here.
– Bill