iCloud not downloading to Mac

Hi,

I've been struggling with iCloud Drive (Desktop & Documents) for a while now. Problems started with the uploading progress taking ages and not completing, although saying something like 'uploading 100 mb of 100 mb' for example.

My iMac then became very slow which lead to me erasing the HD and starting over with a fresh install.

However, now, my iCloud Drive Documents and Desktop folder won't download to my iMac.

These folders show up as empty locally. The folders Numbers, TextEdit, Pages, Keynote, Preview etc. are working fine, though.

On iCloud.com, all folders and files are accessible like they should. The Desktop and Documents folders on my iPad Pro and iPhone are working and in sync with iCloud.com, as they should as well.

I've had a phone call with Apple Support today of one hour and eighteen minutes. An Engineer is now going to look into my issue, but as my business activities depend on iCloud/my iMac and are pretty much stalled right now, I decided to ask the community.

Any help would be appreciated! Thank you.

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What I've done already:

• Log out of iCloud totally
• Disabling iCloud Drive
• Disabling solely the synced Desktop and Documents folder
• Remove the CloudDocs folder in Application Support in my iMac user library
• Kill the bird and icloudd processes
• Restarting the iMac
• Turning the iMac off, removing the power cord
• Spent time waiting for a miracle to happen
• Restarted the wifi network
• Switched to cabled internet