Hi there,
Thanks for reaching out.
First off, take notice that not all models are suitable for PBR program, we are converting just .max + V-Ray files.
By enrolling in the program you agree that some or all your products (which are suitable for the program) will be converted to PBR format by CGTrader. PBR format will be added to available formats section, however, you won't be able to download converted product by yourself.
Please, read PBR program terms and conditions for more information: https://www.cgtrader.com/pbr-program-terms-and-conditions
If you have any additional questions, do not hesitate to contact us anytime at support@cgtrader.com or via live chat.
Kind regards,
Kamile
CGTrader support