I have received a file request from another user, to upload a folder into his storage "area". I got the email, clicked the link, and got a window with a file submission area. I pressed the upload button. There was no response, no "upload started" or "progress" message. I cannot tell if the folder is being uploaded or has been uploaded. Eventually I can ask the requester if he got the files, but that is potentially a tedious back-and-forth process (especially if the upload failed, or didn't even start).
Is there a way for the non-requester to verify that the file is being uploaded?