This issue has been going on for some time for me. Very frustrating.
I can generally get to my dashboard, and browse folders, but I can't upload anything.
Sometimes browsing folders isn't even possible.
I consistently get this message in my browser:
504 Gateway Time-out
nginx/1.9.10
In the event that I can get to my folders, I often still can't upload anything. When uploading I get this notification below the "Select Files" button:
Error: -200, Message: HTTP Error., File: (file name)
I have been using pimpandhost for a long time... I do not want to switch image hosts, but if this continues I don't see any other choice.