Hello Lynn11
I see you have a turbosquid account? (https://www.turbosquid.com/Search/Artists/Lynn11)
Free3d is part of turbosquid and most if not all models that you upload to turbosquid will also be uploaded over there.
If any model that you own is sold on that website, money is automatically transferred to your turbosquid account (i speak from experience)
when you open the model page on free3d you should see your username somewhere on the right side of your page
(Your links are broken, so i can not check it out myself)