Chat window doesn’t allow me to paste from MacBook Air. Can another please assist. Thanks

You could try a clean removal/uninstall of Zoom Application and then reinstall it again. This is to ensure that any corrupted files/config on the application is all completely removed before reinstalling.

If you have a Mac - try uninstalling Zoom by using their uninstall file instead of putting the Application in the trash.
You can do this by going to Applications -> right clicking on zoom.us -> Show package contents -> open Contents -> open Frameworks -> use the ZoomUninstaller file.

After this, try to reinstall Zoom again.

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