Not possible to create a sandbox project

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?