Got to big for my britches and need help re-setting back to my original business policy

[oh-so-nice]

Tried updating my business policy for shipping. Now when I put weight and measurements for a new listing, the price does not come up for shipping. ex: I choose USPS ground 2-5 days. After adding in the weight and size of box, the price is shown and I can then choose USPS Priority or any other shipping method. Now, the price is never shown. Thank you for assistance in this matter