Hello danielfromspringfield,
I was having the same iCloud sync problem with Mac Pages; just couldn't get it to sync even though it was working fine a few days ago. I tried your solution and it worked. You star - thanks so much!! 🙂
I rang Apple and they are looking into it and will call me back. I will send them straight to your solution!
Just one question: now I've moved the Mobile Documents folder, that presumably means quite a bit of other 3rd party app data has been moved as well, and I'm wondering if I will lose much; will all those other folders be recreated in the new Mobile Documents folder? I couldn't see any crucial documents that I might have moved, but I'm not sure.
Any advice appreciated. Once again, thank you so much!!