You must send trial request from SDC Verifier program.
Download setup and install it.
Run SDC Verifier. The License Manager window will appear automatically. Press Request License:
Select TRIAL license type, fill in Company (or educational institution title), Contact Person, E-mail, Telephone and press Generate.
Press Send button to run default mail client (e.g. Microsoft Outlook or Mozilla Thunderbird) to send the request.
Alternatively, you can copy the Request Data and send to firstname.lastname@example.org.