Listia won't let you change your shipping method once bids have been placed, but if you clarify in comments if this is free shipping, flat rate, or exact a listia moderator may be kind enough to change it for you.
open up your auction and on top it will say listing tools and underneath that it says edit, click that open and scroll down to where it says shipping and take off digital delivery and click on ship and then click free ship or the amount you are going to charge to ship it. Then UPDATE Good Luck :)
To make sure you get the most bids and credits from your listings, please add more information about your item. Additional details such as dimensions will help others bid with confidence. This also reduces the number of questions that your bidders have to ask.
Please also change your shipping from Digital Delivery to either Free, Flat Rate or Exact Shipping. This will help prevent your listing from being deleted for being ambiguous, and from continually being flagged by other users.
Thanks for your cooperation and I hope you earn a ton of credits!