A sales icon may appear on a product that is no longer on sale because that product still has the sale tag attached to it.
To fix this, create a discount for 0% on the affected product and turn on the discount. Wait for the process to complete and turn off the discount. The sale tag should now be removed. If the sales icon still appears or the price is still discounted, Email our Support Wizards and we will do our best to assist you.
Visit Create a Discount with Product Discount for complete instructions.