I run a BigCommerce Stencil theme and have been trying to get Google Analytics setup correctly since I started working at this job 40 days ago.
It is double counting some orders but not all orders. I have followed the BigCommerce setup instructions perfectly but for some reason it still double counts some orders. Again, not all orders though.
This problem resides in our GA data all the way back to Jan. 2017 at the minimum. I do not know where to start at this point. I work with a 3rd party for PPC and there reports are wrong based on this issue.