The workflows both have "Argument optional" so when you type "vpn", the workflow's script doesn't find a relevant result (because it isn't yet set up correctly) and therefore falls back to Alfred's searches
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so instead of failing back to Alfred searches it could display "Workflow not setup yet, please read the instructions"
it's possible there is a great reason this cannot be done, but I don't know enough... I don't care that much, now I know the trick, just if this appears often with new users, it could maybe be improved
that's it from me )