Make sure you are switched to your Contributor brand. You can check and change your brand via the drop down button at the upper left corner of the Canva homepage, beside your name.
You can access your portfolio by going to the Settings page. You will also find the Sales and Payments page links there.
You can edit each of your files’ title, description, and keywords on the portfolio page.
You can deactivate your files on the portfolio page. Deactivating will remove your file from the Canva library; however, it will not be removed from designs where the file is used.