I have a 2014 iMac (fully-loaded, max memory and SSD) and an iPhone 6 Plus. I cannot get my iMac to automatically sync iCloud drive documents (Pages, Numbers, TextEdit, etc.). Every few months or so, when I really need iCloud to work, it doesn't; docs created on my iPhone in Numbers and Pages properly sync to iCloud (this can be checked by using a browser to view iCloud drive contents on the web), but they will not sync to my iMac. I am really tired of turning iCloud drive off and then back on (on my iMac) to fix this. It takes three hours to re-download everything. Apple has no clue as to what's wrong. I've called several times. Believe me, if I could switch over to Dropbox for all these, I would; but I don't think Numbers and Pages support that. Running Yosemite 10.10.5 on the iMac. iPhone is totally up to date. Any suggestions greatly appreciated!