Email addresses from well known free email services (e.g. gmail.com) are not accepted. We consider them to be disposable email addresses because they are too easily used to create dozens of new email addresses.
We suggest you use one of the following email services:
Once you have completed your registration you can change your email address to any email service you like.
If you ignore our request and choose to use a disposable email service that is currently unknown to our system you risk your registration to be canceled without notice.
P.S. @aol.com addresses are not accepted because they have blocked our email servers.