AI only moves to the initial player location

Development Programming & Scripting Blueprint
1

Hey guys,
I have a big issue in a project.
The AI only moves to the initial player location. I have 3 types of AI BP (just to test things out).

  1. The blackboard/behaviour tree type.
  2. The Pawn Sensing type with On see → cast to → AI move to
  3. The basic follow:
    image
    image1062×675 158 KB

All of these work only once. They move to the player’s initial location but they dont actually follow him. They move there and just stop.
I have another project where this works without flaw ( I am using the blackboard thing there), but in here it doesnt work.