Hi Prohiki,
I just requested a trial license from a Linux box and the website e-mailed me the license as expected. Are you having the exact same issue as the OP in this thread from almost a year ago? Or are you having a different licensing issue? If the web page is giving you an error, can you copy/paste me the URL that is shown in the Request a Trial License dialog? I'll take a look to see if something is mangled.
Also I had tech support send you a trial license...so you should have that in your inbox.
Thanks,
Ryan