I've decided to subscribe to 'premiere pro cc' for a year.
I started my subscription at 3:17 a.m. (but now is 5:00 am)
and I got a mail saying that the order was completed.
It's been over an hour.
But no matter how long I wait, the trial doesn't end.
I must to start working on my video now..
At first: try to log out your Cloud App and sign in again.
Sorry about the activation issues with Adobe Creative Cloud desktop application.
Have you tried the step provided by Hans?
If it still does not work, can you reach out to us via phone or chat here http://helpx.adobe.com/contact.html? We'll need to hop on a remote session to troubleshoot this further.