the web version is updated as well. If an upload doesn't go through it's possibly an internet connection issue. Hard to say. It seems to happen on unstable connections.
Interesting!
My connection is wired (copper and fibre optic) however, I do not live in the United States.
Thanks for getting back to me. I guess this is going to be a tricky issue to bugfix; for even if you had a 'resubmit' button it could be abused by hackers caching in auto-generated images. I guess all I have is to disable screensaver whilst I'm in the middle of a paint (in case it's suspending network connection) and cross my fingers. Thanks again! It's a fun game! :)