Can't remove the passcode/password in link for meetings?

Hi all,

So I've customized my meeting link, and I've unchecked all the options for passcodes. Still, when I schedule a meeting or paste the link that's copied tot he clipboard, my meeting link still includes ?pwd=lkjdkfdjfjdkfjdkfjdkfj in it.

I've seen other meeting links not have this - can somebody point me to the setting that turns that off? Many thanks!