iCloud Drive don’t sync on MacBook Pro 14

As per the article What is iCloud for Windows? - Apple Support

Pages are not used in windows PC , they are only used with Mac / iPhone / iPad Use iCloud Drive with Pages on Mac - Apple Support

Read If files in Windows won't sync to iCloud Drive because the path is too long - Apple Support

See the articles About collaboration for Pages, Numbers, and Keynote - Apple Support

Access iCloud Drive files from your iPhone and other devices - Apple Support

Try going to System Preferences/iCloud (Apple ID for Catalina or later) and stop syncing by unchecking the box. Wait a couple of minutes, then check syncing. Allow time for the sync to complete. The photos sync is extremely slow. It could take several days or more for the photos to sync..

Last resort  - have you tried signing out of iCloud, restarting, and then sign back in?

I'm having a iCloud sync issue on my iMac (2009 model) running OS Sierra version 10.12.6. Sierra is the latest version the 2009 model supports. This is the first time I'm trying to sync. The sync does use the folders hiearchy on the iMac and creates in iCloud but then does not sync any of the files under the folders. I upgraded iCloud storage in case that was the issue and now have 50GB and the data to sync is ~5GB so issue not resolved. I have a new MacBook Pro and want to be able to access all the documents originally created on the iMac.

I have the exact same problem and it's very frustrating