Today, all of my Creative Cloud apps are saying I am on a 7-day trial.
The same thing happened to me last September, but I can't remember what I did to get it back (if I remember correctly, it was fairly easy to fix). I went to Adobe's website and tried their fix of logging out of Creative Cloud and then logging back in, but that didn't help. I also cleared my browser (another suggestion) but that didn't help either.
If you have a legit CC Contract just call Adobe.
They fixed the same issue in moments when this happened to me.
"MY MEDIA/PROJECT MOTO: If you think three copies of your media or project are enough.
Take a moment to place a value on them and then maybe add two more.
Hard Drives are now stupidly cheap. A RE-SHOOT AND YOUR TIME AREN'T."