In the past a number of registrations have been issued with invalid email addresses. Unfortuanetly the confirmation email with your password is then bounced and you could not log in. A reregistration with an already existing email address is not possible.
Please referr to the FAQ for correct registration procedure. And carefully type your email address so that it is correct and your password can reach you. When having problems, please contact webmaster@microencapsulation.de [3]