Stuck in a login window loop adding zoom link to Outlook Calendar (web browser)?

I have the extension for adding Zoom meeting links to my outlook calendar (browser-based, not app), I'm logged into Zoom everywhere, latest updates done. But I'm still stuck in a bizarre login window loop when trying to add a zoom link to my calendar events. It will pop up with a login window, close when I enter the info, and ask to pop up ANOTHER login window. Over and over. I'm using Safari, could I need to use another browser for this? TIA.