Had trial version of Photoshop, now bought CCloud, but photoshop still asks for serial number

I had downloaded a free trial of Photoshop, it expired, which led me to buy Creative Cloud so I could use it. Now after purchasing it, it keeps saying "trial expired" and wants a serial number, but every other app works ok without having to load a serial number. Also, have been on hold with customer service for well over 2 hours. I've tried uninstalling and reinstalling/downloading Photoshop multiple times (just like the chat help suggested) yet it still asks for serial number since trial has expired to open Photoshop. Help?


I finally managed to get Customer Support on a Chat line.  There is no registation for CC products but you do have to activate your download/subscription using your Adobe ID and password.  That removes the request for a registration/serial number.
I am now on line and happy.  Sad it takes so much sweat and frustration to get these simple things done.