That's not a valid address! That could be your problem, unless you simply typed it incorrectly. The link that you typed is "www.algodoo.come" which of course should be "www.algodoo.com"
I don't know because you haven't given me enough information. Do you have trouble uploading any other scenes, or is it just that one particular scene that you have a problem with? If you haven't tried uploading any other scenes, then try it. We need to know if the problem is related to that particular scene, or if the problem is related to something else like your browser or your Internet connection, etc.
At this point the only thing I can suggest is to log-in the Algodoo forum and post your scene there. Others can look at it to determine what the problem is with it. Without seeing your scene, there is no way that anyone can tell you why it doesn't upload.
I can think of ONE possible reason why it doesn't upload, and that is if the scene file size is simply too large. There is a maximum size of 15 Mbytes. And if the scene is too large, then you will need to delete a few objects in the scene until you get the file size below 15 Mbytes. The problem might be that simple, and it's easy to fix if it is!