Nethys

Hello, I'm pretty new to this tool and I have a little bug that I can't understand. I can create zone, sites, campaign and modify them without any problem. But when I create a banner, I can't edit it. If I click the link, the site redirect me to a sigle pixel image. In my navigator tab, I can see "banner-edit.php (Image GIF, 1 x 1 pixel)" I don't understand why this happens. Thanks for your help