I recently downloaded the free one, installed and ran it. I watched a few tutorials on how to set up Octane for Blender and once I open the shader node, everything was missing except for what you can see in the image. I would appreciate if anyone can help.

Hi Anna, several users have reported similar issues with OctaneRender 2023.1 on RTX 40-series cards—try disabling RTX acceleration in the settings or rolling back to 2022.1.1 to see if stability improves, and make sure your Blender plugin and NVIDIA drivers are fully updated.