You can register
Please note that this registration is managed in two steps
You will have to provide your name, first name, institution, e-mail (take care to spell all these correctly)
and you will have generally to choose "Academic before 05/19/2017 (included lunches and Gala dinner)".
Then you will have to wait for a validation mail.
From the validation mail you will receive, you will have to click on a link and finish the registration.