"Libraries not currently syncing Open the libraries panel to sync assets to Adobe cloud storage."

[LAMY2017]

In troubleshooting a Cloud Activity warning:
"Libraries not currently syncing
Open the libraries panel to sync assets to Adobe
cloud storage."

Where is this mysterious Libraries panel? (note that after I followed this path down a rabbit trail that I still don't know where the panel is still see the syncing error message).

I felt confident when my search on Adobe.com led to a webpages that suggested that I should download and run AdobeCreativeCloudCleanerTool.dmg.

What a foolish act. Running that app deleted the Creative Clous app.
More clicking, another Adobe.com webpage had me download the CCLibrary installer. Whew.
Too soon to relax. All Adobe apps disappeared from the Applications folder and Dock (except for Ps, but it's nonfunctional).

I had to install LrC, Ps, and Bridge ......
LrC v13.5.1 installed successfully, with catalog intact!
Ps v25.12.0 installed successfully
Bridge v14.1.2.300 installed successfully

[Focus5542]

I receive no warning

[Focus5542]

My library is 96% synchronised ...???
The PC has long since rebooted, the temporary files emptied and the cache erased.
Don't forget I'm a computer scientist.
When I enter a group name in library, the response is very slow ‘like an old broken hard disk’.
When I enter the files for a total of 40 files for 26.2 MB it takes 2 hours.