To download your deck, find it in your presentations, hover over it, and click the three dots in the upper right corner. You will find the Export option.
This can also be done in the presentation editor, by going to "File" in the upper settings menu bar. When exporting PPT, you can request a Static file (non-editable) or an Editable file.
When exporting your Slidebean presentation as an editable PPT file, please keep this in mind:
Most of the Premium fonts you have available in Slidebean, are not installed in PowerPoint by default and will be replaced for a generic font.
Video and Audio are hosted online and will not be exported.
Charts and tables will be exported as a non-editable image.