foam and splash only rendering when render as geometry is on

hi

here is the file i am working on

its a max 2022 file and vray 7 used. this scene was originally done in feet inches but i converted it to metres and the objects ar elao correctly scaled.
i am able to see my phoenix foam and splash particles in preview but when i render them i see nothing. i have tried bubbles , splashes cellular point but nothing is working.
please see the scene and see whats wrong. this is my first big scene of a lake. till now everything was working fine on small water sims.
can someone help me herte?
also a note when i change the render to corona everything works fine automatically without changing any phoenix settings

thanks

Hello, thanks for sending a link to the scene. I’ll look into it.

In the Environment and Effects dialog, there’s a PhoenixFD atmospheric effect. It needs to be active to render the particle shaders.

Thanks man. Problem solved