Particle bluprint shows Mterial as Squere...

hey so, i found some other materials online and i try to repeat the process of creating a Smoke/Fog Particle
this is the material:

and this is how it showing up at Cascade and in the Project

and this is how it suppose to look like in the original particle that i got:

I did try to set some setting inside the emmiter but nothing helped…

hope to get some assist :<