Hello. I tried again, having open both sessions (in frontend and backend of Sellacious). Error persists, maybe in less parts. At least, in pages while adding to cart, it seems to be fine (the same products in the cart), but when trying to purchase itself the cart shows different amount of products. As you can see in the attachments, in the same session of purchasing two different tokens are created and I don't think that should be. It would be good you recheck going until starting to purchase