Ok, problems downloading/activating etc.
What I've done:
Purchased the Upgrade to Platinum from JRR
Obtained the redeem codes from JRR
Followed their link License:
http://www.cakewalk.com/redeem/Entered the redemption code (checked twice, the codes are correctly entered)
It then asks me for my X3 Producer Serial Number (checked twice, correctly entered)
It won't go any further, keeps asking for Serial Number
I go into my account to check the Serial Number (I was previously copying from Help > About (which says I'm on build (X3e build 352))
X3 is NOT listed on my list of products.
The Command Center states "You don't have any products"
So, dear community, where do I go from here?