It would seem you have some concepts to learn 
Here we go:
An Actor and a Component is NOT the same thing.
The Actor can be seen as the Container, while a Component is something you put in it. Basically, a component is always part of 1 actor, while the actor can have multiple components.
What you are trying to do in that picture is use a Component (a static mesh component to be exact) as an actor. It’s not going to work. Fortunately, there is also a node to attach a component to a component!
Basically, when you use Attach Actor to Component, you are actually linking the component to what is called the Root Component of the actor. So in theory, you always connect components to other components.
To do what you want, use the Attach To node.
