For example if I do something like this, a straight line to the haaton should the heart become red?
I also tried other pattern or simply refreshing to have another puzzle but don't know why I can't seem to complete a single game.
The pipes in this game are a "straw," so your straw has holes in it.
The only exits/entrances to the straw should be the top and bottom, and they should only open to the blender / haaton respectively.
Ah ok, finally I was able to complete a puzzle. Thank you for the explanation and the patience to answer me.
No problem.
Your feedback was useful.