I can't seem to be able to log-in with the back-end details, I'm getting an incorrect password message. Can you please check that? Since the page is private I can't check that either.
I have a possible guess though. By default the filters will display items that are not related to any of the filtered taxonomies, or does not have any taxonomy terms at all. Try disabling this option on the Frontend Search Settings -> Advnaced panel: https://i.imgur.com/y3Pv9HI.png
Also, if the filters are empty by default and you want to explicitly exclude the items that are unchecked, you can try to disable this option as well: https://i.imgur.com/CqQlpj9.pngBest,
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