Issue With Selecting Deformer Points on a Free Form Deformer


I created a drawing, added a free form deformer with a few points and it worked fine. A little while later and when I try to select the points on it to make it deform, and there is a circle with a line through it by the mouse (like a "no sign) and I can’t select them.

I am using the transform tool and can select and move other points fine.

Does anyone know what I did, maybe I bumped into some setting?

Any help is greatly appreciated.