I have the same problem, except mine might be a little more complex. I purchased a Sonar X1 Producer mega deal from DV247 in the UK. The deal includes Sonar Home Studio 7/ Sonar X1 Studio on CD's and instructions on how to get the upgrade to Sonar X1 producer on a letter inside. Once you've received the download link for X1 producer, it should automatically entitle you to Production Suite. This is clearly stated on DV247's site.
"What's more this offer can be combined with DV247's Sonar X1 Producer Megadeal! So you can buy Cakewalk Sonar X1 Producer Megadeal or any associated bundle and upgrade to the expanded Cakewalk Sonar X1 Production Suite".
I only got the X1 producer link which has been mistakenly been put through as a freeFirst Class Upgrade. I'm still waiting on a reply too. I think the issue could be realted to the upgrade instructions which advise you to contact Roland for a link, when it might have been easier just to contact Cakewalk directly (as stated on the DV247 site). I followed the enclosed instructions within the package ubfortunately.