I need to find a recent download and tried searching under everything I can think of but I still cant find it and I just downloaded it less than an hour ago so the chances it is no longer on the site is very low.
If you liked that model before or after download than it would be in your likes folder.
Go to Community>My likes.
Under community there is drop-down menu just take your mouse there and click on button My likes.
Answered with a tutorial: https://grabcad.com/tutorials/is-there-a-place-where-i-can-see-my-recent-downloads
If it did load properly click on your avatar in the far top right corner of this screen, it will bring you to your profile. In your profile click on the "Projects" tab to view all project submitted.
If it is not there try reuploading it.