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I can't see particles when I render. Why?
Particles are nothing more than points without a dimension. In order to see the particles in your render them you have different options. You can to connect the geometry you want to instance with to the "Fluid" node.
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Where are the meshes? I can't see them in my render. What's going on?
The creation of meshes is a separate process. If your scene does not contain a mesh node you have to add it, adjust its parameters and create the meshes for the entire simulation range. We recommend adjusting and simulating the particle part first and cache it. Then, in a second step, you adjust the meshes and cache them as well. This split workflow is by far more economic.