To change a design from available for download to not avaible for download:
Step One: Go to your portfolio, which can be found by going to your profile and clicking the “Portfolio” tab.
Step Two: Click on the pencil icon on the design listing to edit it.
Step Three: Scroll down to the “Distribution” section of the edit design listing page.
Step 4: Uncheck the allow download option to discontinue to offer the design as a downloadable file.
Save changes and you’re done!