Question about how to purchase SEV boxed version

[Master Belisarius]

Well... yea, I'm still alive.
Really was a long time without read the forums (even the beta forum).
The main reason: real life. Right now I'm working in two jobs, working around 12-13 hours during the week (but less hours during the weekends).
This fact, plus the time I need to dedicate to my family... it's somewhat clear that would need days with more hours, if I want to play computer games again! hehehehehe

Anyway, some days ago wanted to purchase the SEV boxed version looking into the Strategy First website.
But when I do a click over the option to do that... I'm getting this error message:

" NOT_ALLOWED_TO_ACCESS_SITE
We have encountered an internal application error. The error has been logged.
Contact System Support"

I have contacted the "system support"... but never got an anwser.

Somebody has the same problem? Because I would like to purchase the boxed version... not to download the game at Steam.