If you made the completed image viewable, it's easy to download regardless of what the website may tell you. If it displays it as a .jpg .png or whatever, it's a simple right click -> save as. If it displays it in some kind of control (flash, silverlight), can nicely printscreen and re-save it (among some more advanced methods ( decompilation, asset browsing etc.)
If you people can see it on the internet, they can most likely take it.
As for the actual issue, you need to take it up with
[email protected] as no support can be provided here.