Can a flame be invisable like u cant see it because i bought a flame for the head and i didnt see it ad i bought a flame particle and still cant see it help?

Did you bought it at the market?

I dont think someone will make a flame invisble maybe its a glitch or you should check your game rules or maybe the flame particles are too small to see i mean it could be a white flame.
Dl and lp yourself check games like tick the particles and also the flame is only for 25k in that price rarely you can have a flame with its practicles.

The flame you bought just doesn't generate particles. It won't work by any way.