Ads can only be Renewed/Upgraded within 3 days of expiration. You can renew your expired ad by logging in to RollaNet Classifieds, then from the 'My Account' menu on the left-side of the page, Click the 'my expired listings' link.
When the next window opens you will see your expired ads. Click the 'Renew/Upgrade' button, on the right-side of the page for the ad you want to renew. (NOTE: Be careful not to click the 'Delete' button. You cannot restore the ad once it is deleted.)
If the ad you wish to Renew/Upgrade is not displayed you will need to place a new ad.