If you navigate through your zip file to the HTML representation of your report, you will notice that it doesn’t include a viewer pane. This is because ESMA does not allow the inclusion of a viewer within the file.
If you want a version of your report with a viewer embedded, to display on your website for instance, you need to upload your zip folder to the XBRL Inspector as described in the ParsePort XBRL Inspector Manual. After the upload is finished, just navigate to the viewer section and click the little icon in the top-right corner labeled "</>" which will allow you to download a version of the report with the viewer included.