Same for me, I use iPhone, iPad, Macbook, iMac and a Windows PC in the office - all on iCloud.

For a while, it was perfect. Now it's a ****ing nightmare - my iMac isn't syncing.. Random folders completely refuse to delete..

WHY can we not log into iCloud.com and see the central, reference collection of folders?

I pay big dollar for Apple to 'just work'. It isn't - and it's wasting my time!