To export reports as a CSV file you can follow the below.
Login to Nine Ad Manager platform with your email and password.
From the panel on the left select Reports.
Select New Report to create a new report.
Select from Order or Campaign (Optional for Agency and "Clients")
Create a name for the report.
Choose from a One-time report or Scheduled report.
Select a Start and End date.
Choose to send report via a Direct download or an Email
Wait for the report to finish generating
You can now either download, edit or delete the report
You can now access of copy of these reports and save them.