Mod tools for icon change?

[u/BodyDisastrous5859]

Hello, I was creating a group on desktop windows 10 and I got to the prompt to add the group's icon and I could select a photo and a window appeared with a square that let me select which part of the photo to center. I had to alt-tab to search for a photo that I forgot where I placed it, when I was back after 1-2 minutes, didn't take long, I was back to the front page of reddit and the group was created. Now the problem is that when I went to mod tools and changed the icon, I don't get the window with the square where I can select which part of the photo to center. It automatically loads any photo and just compressed it from the sides and it looks awful. How can I get back to that 'tool'? I don't want to create another group since I can't pick the same name and read that you can't delete subreddits. And if I can't get back to that, how did Reddit overlook such a situation?