The problem has now been resolved and re-uploads and uploads should work successfully.
Our engineers are working on converting any publications that you have re-uploaded and where the re-upload failed. These publications should successfully appear in the Publication List within the next couple of hours.
You may certainly re-upload the content again on your end, if you prefer not to wait. We suggest clearing your browser's cache first, before re-uploading.
Sincere apologies for the inconvenience this has caused and thank you for your patience while we were solving this issue.
We are aware that our re-upload function is not working. We will update the progress of this error as we have them. Thank you for your patience as we look to resolve the problem.