I am brand new to working with Shaders, and haven’t worked with any code for them, only the Shader Graph. It’s very possible I’m missing an extra necessary step for Unlit that I don’t know about.
Me too. The situation is similar for me. I’m work in 2D laser line:
Sample texture 2D + Color → multiply = nothing… :S
Sample texture 2D + Color → add = work but no glow effect.
Your color property likely has an alpha of 0. The sprite master nodes use the Alpha value of the color as the alpha of the shader, so just edit your color property to have an Alpha of 1.