Cannot create a new sandbox project.

Is this still an issue for you? If yes, which sandbox is it - sandbox01 or sandbox02 ?

If "edit profile" was giving you 404 at the time you were logged in, it's possible we were re-loading our webapp at that time. And may be sandbox couldn't detect your completed profile at the time. To create sandbox, you need to complete all basic profile information as well completed address, company etc.

My profile is completed but my sandbox is untouched because i don't know how to begin with.

I'm trying to create a sandbox project.
For that, I complete my profile and I obtain the message "Thank you! Your profile was successfully updated! You may now return to the sandbox to create your project".
I tick off the term of license box.
I click on "Create Project" button.
The red message appears (above "Create your sandbox project title"): "You need to complete your jazz.net profile before you can create your sandbox project."

I have already done it!
Please could you help me?

I am trying to complete profile, so I can use the sandbox, however the Submit button for the profile page is disabled. (maybe a subtle way to discourage increased sandbox usage), amazing this problem has been unresolved for such a long period of tie, just wasted my 2hours!