Have you clicked on the CC icon in your task bar? once there, click on the three dots in the upper right and in that drop down, click Log-in. This should log you in to CC and allow you to access the desired application.
Apologize for your experience. Can you provide us with more info on any error message that you see so that we can better assist you. You can also provide us with a screenshot to better explain the situation. We will do our best to help.
I am moving your post to the Creative Cloud forum for the experts there to take a look.