You want to first make sure to install your template to your campaigns. From the setup page of the contest, you can click on "More Settings" and it will open up a drop down menu.
From there you'll click "Manage Assets" to view all of the graphics.
Now you can view them one at a time and download them or download them all at once.
For more assistance, please reach out to Audience Customer Support by chatting in the platform, calling 801-901-2011, or by emailing email@example.com