Left click on the icon at the upper right corner and choose "My Models" from the dropdown list. You will see the list of your items and their parameters in rows and columns. On the left side you will see the preview images and names of your assets, on the right side their "Status". If you click on the preview image it will take you to the page of your item.
In general, if you encounter problems or you have questions you can send an e-mail to Support:
support@cgtrader.com