Exporting all top-level folders can only be done by means of multiple exports - selecting each top-level page and then exporting that to a single worksheet.  If you select all pages/the whole report, you can export _that_ to a single worksheet, but of course that won't split it out into multiple worksheets based on the top-level pages.

Be able to make multiple folders in Displayr and export each folder into its own worksheet just like how you can in Q.