Similar problems, when I do manage to upload and fill details in when you submit they don't go anywhere. I have tried different browsers, different computers including a tablet all the same.  I emailed support and did get a reply saying they are aware but try logging out and then in again or different browsers.
I had already tried with no success.
I uploaded one image yesterday and it went straight in, tried with others no luck. They don't seem particularly bothered at support by the reply i received.