Can not share screen on ZOOM meeting after installing macOS Monterey 12.0.1

I get the message "Host disabled participant screen sharing" when I try to share a Keynote presentation on ZOOM. I am signed into a ZOOM meeting from a company, so it is not a ZOOM session that I own, but until the new OS, I have always been able to share my presentations on that meeting screen.

I currently have Finder/Sharing/Screen Sharing selected, and the green dot indicated that Screen Sharing is ON. This is a home computer, not on a work network, and not on the network that is hosting the ZOOM meeting. I'm not sure what checking the other items under Screen Sharing will accomplish, for example, do I need to select File Sharing? Other items on that list? Thanks in advance.