Makes you wonder why you got an email 'out the blue' after so long.
It seems you are still out of luck - no change at the moment, if you go to their Facebook fan page and click on the link for website it redirects you to a message to say you are restricted "Dear Pandora Visitor, We are deeply, deeply sorry to say that due to licensing constraints, we can no longer allow access to Pandora for listeners located outside of the U.S. We will continue to work diligently to realize the vision of a truly global Pandora, but for the time being we are required to restrict its use. We are very sad to have to do this, but there is no other alternative. We believe that you are in United Kingdom... "
the page has the same address as your link pandora.com/restricted