Alright I've carefully examined each screenshot in the Media Manager. I've deleted and reuploaded them. I've re-ordered them, saved, and tried to resubmit. I went into the Developer Tools to search for the "state" like someone recommended. I tried logging in, logging out, chrome, and safari. I literally removed all of the non-English screenshots from the app. Still the same error message: "There are still attachment uploads in progress."