Try these things in order:

>Restart computer (if you haven’t already)

>If you’re using a VPN, try running on a regular wi-fi network

> Quit any backend Creative Cloud things running

Windows:
Quit Creative Cloud then open Task Manager, right-click, and end any Creative Cloud background processes running

Mac:
Quit Creative Cloud then open Activity Monitor → force quit any Creative Cloud background processes running

>Reinstall Creative Cloud (again, if you haven’t already)

>Install plugins manually https://pixnub.com/manual-plugin-installation/

Let me know if any of these fixes the issue