CEO's upcoming meetings are not showing up in the Zoom app

Our CEO has several recurring meetings as well as other meetings that are not showing up in his Zoom account. I've checked and confirmed that the add-on "Zoom for Google Workspace" is active in his account. All the meetings show up in Google Calendar, but do not show up in his Zoom app. Adjustments need to be made to events and the CEO is unable to make any changes. 

CEO is using a mac running macOS Sonoma (up-to-date)

Version: 6.1.0 (35886)

No error codes.

I see there are several discussions already started here in the forums regarding similar situations. I'd appreciate some support.

Thanks.