Change a game icon while it is pending?

I added a new Game and maked an icon. It said it must be 240*125 pixels, but I only worked with Barubary's icon maker before, so I don't knew something about the new icon system. Barubary's Icon Maker makes Game Icons in a different resoulution so I streched the Game Icon so it is 240*125 pixels. When I saw the Game Icon there were two Icons in one and this looks very strange...

How can I change the icon now, while it is pending or can I add the game again with the correct Icon when the submission failes because of that?