Hi there,
CGTrader does not restrict you from selling your 3D assets on other websites or platforms.
You can find information about Loyalty Discount Program there: https://www.cgtrader.com/pages/cgtrader-loyalty-discounts-explained#:~:text=CGTrader%20Loyalty%20Discounts%20is%20a,paying%20users%20to%20purchase%20models.
If you have any questions, please contact us via support@cgtrader.com.
Kindly,
Austeja from CGTrader