This is already covered in the Compatibility List and the GenP Setup, Troubleshooting, and Best Practices Guide, as well as discussed extensively in the GenP Stoat channels.

We don’t provide support for Lightroom CC, as it is a cloud-based application. Because it relies on Adobe’s online services, its behavior can vary widely between users.

For some, it may work without any issues; for others, it might work only temporarily, with certain features failing over time, while some users may experience constant trial notice, non-AGS-related popups or find the app won’t run at all.

Reinstalling or patching Lightroom CC can also cause it to malfunction, since it depends on online authentication, background Adobe services, and synced configurations to function correctly.

The only recommended solution is to use Lightroom Classic, which is fully desktop-based and fully supported.