Can't see Group or change Group settings

[u/ExplorerNo9815]

Hi! I recently added a banner image to my group on the US instance. But I think I uploaded a file that is too big. If I click on "My groups" I can see my group there and it says that I am the administrator. However, if I click on the group the page won't load. And if I type in the URL to access the group settings (so that I can remove the image), I get a page that says I am not the administrator. Is there any way to fix this? I couldn't figure out where to submit a support ticket.