why my product price change and sale price change automatically every day. Even though I have set the product and sale price for a certain time period on the product page but every day both of that changes. I am running a 50% off FB campaign and I have set the regular price of 50 dollars and sale price of 25 dollars but when I wake up every morning the price change automatically, for example, regular price 37 dollars .sale price 32 dollar which means 15% sale. I am fed up with this. I am losing money due to this. WHAT TO DO