I keep having to change my citation style back to APA 6th edition. When I change it, I save it and go back to my document but when I update the citations it changes the style again to Chicago, even through the Paperpile website has it saved as APA 6th.
I am having the same issue. I followed the steps you list above but when I format the citations, it resets it to Chicago style. Can you suggest what might be causing this?