Sign in to your WeDidIt account and select 'Campaigns' from the left hand panel, this will open a dropdown menu. From the dropdown menu, click 'live' or 'pending' depending on which campaign you wish you edit.
Once you're taken to your list of campaigns, you can click the edit button to the right of the campaign title of the the Live or Pending campaign that you wish to edit.
This will bring you to the campaign editing page where you're able to make changes to the information of your campaign. Make sure you click 'update' if you make any changes before leaving the screen.