Helpful details to provide:
If your trial expired and you are ready to purchase a membership, please click the Creative Cloud icon, located in the taskbar (Windows) or Apple menu bar (Mac OS), to open the Adobe Creative Cloud desktop app.
If you don’t see the Creative Cloud icon, launch the Creative Cloud desktop app as follows:
Then, in the Apps panel, click Buy Now next to any expired app, and follow the onscreen instructions to choose a plan and purchase a Creative Cloud membership
You can also refer to: