Unfortunately, we do not adjust the price for orders placed before or after the start and end date of a campaign.
If you have not used the product you purchased before the promotion started, you are always welcome to return the item within 30 days from the date you received it. If you want too, you can place a new order where you take advantage of the current campaign.
For products marked with SALE or STOCK SALE, you have the right to return your purchased items within 14 days after receiving your order.