can't screen share on a Mac after upgrading

Hello, I recently updated Zoom and now I can't screen share.  I'm following these directions that I'm finding online...On Macs, you need to go to System Preferences, Privacy and Security, click on the [ Privacy ] tab, choose 'Screen Recording' on the left side and add the application Zoom  here. All screen sharing apps must be added under the Screen Recording privacy section.

But in the Privacy settings under Screen Recording, the "Zoom" option is grayed out and I can't click on it to enable Zoom. I've tried reinstalling Zoom, restarting the computer, all the tricks I can think of...any ideas?