I am unable to retrieve my Daily Mail Newspaper (iPad edition) in the Newsstand. I have already deleted and attempted to reinstate it but am now told this is no longer available, however I know this is not the case!

I am unable to retrieve my Daily Mail Newspaper (iPad edition) after deleting the icon as the daily edition was not appearing. I finally found it only to be told this is no longer available however I have a subscription vaild till 2013 which I am currently unable to use ! Ay ideas as to how to download , retrieve this successfully. I have rebooted etc made all the usual attempts..please help ASAP