On the member-only dashboards, data drill-through is a feature.  From here, you have an option to export the data, as seen below.  Typically, the downloaded xls can be found either in the bottom bar of your browser window, or in your default 'Downloads' folder.  If you can't find it in either location, the download was likely blocked by a pop-up blocker, or sometimes due to browsing in 'Private' or 'Incognito' mode.  Re-attempt the download from a non-private window, and turn off any pop-up blockers that may be enabled.