Registration for the Paris event in June is a two step approach.
In the first step, your contact information and event options are captured. You then progress to the second step which is payment. This is performed via PayPal. Your information from step one is fed to PayPal and you are provided with a number of payment methods. Use your desired payment method and when complete a receipt is e-mailed to you. If you do not have this receipt, your payment has not been completed and registration has failed.
If you have problems with this method, please contact the webmaster.