I don't have a Chromebook so cannot test this for sure, but what I guess is that the link is sent to the browser that still has the old app extension OR it is in the OS itself. I don't know how you can the default apps for links (I know how do you do it for the opening files situation), but according to this article from Chromebook Help, you should be able to set this option for the Chrome PWA app as per the section "Manage how your apps open links": https://support.google.com/chromebook/answer/6206362?hl=en
"Auto-launch PWA on ChromeOS When enabled by an admin, users clicking on a join link will be directed to the PWA, instead of the soon-to-be-deprecated Zoom for ChromeOS app. This must be enabled for your account by Zoom."
I found this option (from the left hand menu on the zoom web home screen, once logged in):
ADMIN > Account Management > Account settings > Meeting... scroll down to In-Meeting (Advanced)
easiest way is to type PWA in the search bar in ADMIN > Account Management > Account settings and this is the only result that comes up.
Thank you for the detailed help, but I still cant find the option you refer to. I am on https://us04web.zoom.us/profile/setting, and want to set the PWA option so that my Chromebook will automatically go to PWA when I join someone else's meeting.
I've been working with Zoom support on this since my original post a few weeks ago. They are aware that PWA doesn't autolaunch if the meeting creator hasn't changed the Autolaunch PWA on ChromeOS setting ...and they are working on it.