plausible.office.odoo4projects.com is a self-hosted CE instance: it serves /js/script.js and /js/plausible.js, but /js/pa-VLJpcZHbeLiw9Ub8C_MgG.js returns 404, so the snippet you supplied loaded no tracker and would have recorded nothing. Site id now travels in data-domain (apex + www report as one site).