I can create the clone and the skin rendered perfectly, but i cannot transfer to it.

Im using minecraft version 1.12.2, ichuntil 7.2.0 and sync 7.1.0

I cannot reproduce. I see that it seems to detect you shell. Did you try the other mouse button?

Omg, im so stupid, i switched up left and right mouse button in the settings as i prefer to place block with my left mouse more. And so i kept trying to left click so it doesnt work. It works perfectly when i clicked right mouse. Thank you so much :))