Once you have successfully logged in to the website a new menu -
User Menu items will appear at the top right of this website as well as within the Advertise With Us menu.

The user menu will allow access for you to place new ads as well as access to your your ads currently running where you can edit.

To Edit an Advert you have placed, log in, click Manage Your Ads under User Menu,
click the advert you have placed and an Edit button will appear within the details of your ad.