I am trying to offset a path and it is not working. I believe my problem lies where it says "type".
Maybe there's a mistake. Look at your image, the top left info is about character and paragraph, this never appears when a shape is selected.
Here two apparent equal paths:
When the green is selected, the top left indicates this is a Rectangle.
When the red is selected, the top left indicates Type, because is a Text Frame. If you touch a shape with the Text Tool immediately is converted to a Text Frame. That's why you can not do some modifications.
To make changes to a Text Frame Path, select it with the Direct Selection Tool, the white pointer.