On any tab that provides reports, click the text link at the top right of the page directly beneath the "Report" button (ex. 1 Scheduled Report) and a pop-up will appear will all scheduled reports which allows you to enable/disable, delete, or edit your current saved report schedules.
Alternatively, you can navigate to the "Reports" in the menu waffle where you will be able to view all of your scheduled reports across all integrated cloud environments and perform all of the same actions.