Uh I ll try that

[weary jetty]

Also try the other Rendering Modes

I would try fade, opaque and cutout just to see what the effect is

[remote valve]

Keeping Transparent rendering on Material with the Default texture import settings, we get this ugly thing

Trying with Fade rendering on Material makes it look great in the inspector, but does not render on camera ;(

[weary jetty]

Even with "alpha is transparency" checked?

[remote valve]

That's definitely something I should have checked thanks 👍 but still nothing rendering 😑

[weary jetty]

So far absolutely nothing seems to do what I expect

I would try to test the particle system in a brand new blank scene in isolation, and/or a new particle system in this one

Creating a new particle system from the GameObject menu creates one set up with default values and materials