When i draw in 2D it should come up with a green ball on the end to tell you when the point is looped or connected but i have lost that somehow. The only way i can get it to work is to hold down the ctrl key. So that is the only way i can make the shape to extrude. Can you tell me how to get this back to automatic please
You probably lost the configuration of the automatic constraint inference. Try this:
On the sketch environment, right click anywhere and select "constraint options". A window appears and you should be able to activate the constraints you want to be automatically inferred when you draw. Remember to also activate the bottom option that says: “Scope of constraint inference - All geometry"
Let me know if it works!!