I noticed that my Meta ads are double reporting some sales but not all. It's not ad specific, as it seems to be random. So for every 1 sale I get on Shopify, Meta is reporting 2. To make matters worse the conversion value on FB is calculating my subtotal AND order total which is totally messing with analytics. My events manager for purchases seems off as it shows 1 event from browser but 3 from server.
My Add To Cart is also doubling and I checked to make sure I don't have a manual "add to cart" event.