Very weird...I registered and no email, which is what normally happens as this contains the license. or you're allowed to download the license file when downloading the trial software.
Only 2 other ways I can think of getting around this:
1. On the page where you download the software, hit the link for Licensing and log on to the Symantec Portal if you have access.
2. Select the country you're from on the link below and see if they can assist:
https://www.symantec.com/contact-us
Although with no indication of a license download link, are you sure you need one for the 30-day trial period, and can just not proceed with the import?
Thanks!