Thanks Joe, but this has been going on here and there for months now. I've gone through all the steps on this page and was even contacted by the iWork team at one point. The service is still spotty at best (it actually happens to be working again right now).
The transient nature of the problem leads me to believe it's an Apple issue (the service itself or something triggered by various software updates), rather than some configuration problem on my system. It works for weeks then stops. At some point in the future, long after I've given up trying to resolve the issue, it starts working again. The only reason I noticed it was now working was because I received an email about your reply and decided to see if the problem was still occurring.
Just a couple weeks ago, iWork stopped syncing on not only the iOS devices but also in Yosemite. Messages poured into the forums yet Apple's status page showed that everything was ok the entire time. It was several days (or maybe a week) then everyone's iWork started syncing again at nearly exactly the same time. That's not us, that's Apple.
I think the thing that frustrates me the most is the inconvenience caused throughout the device when you follow various "troubleshooting" steps when Apple refuses to acknowledge an issue. The iWork team had me log out of iCloud, then back in... Oops! There goes all of the credit cards I set up in ApplePay on my iPhone! Reset Network Settings? Sorry, all of your network passwords are gone, you'll have to enter those now everywhere you go for the next week or two.
I'm not knocking you Joe. I truly do appreciate you taking time to reply. I'm just getting really frustrated with Apple's inability to get these things working in a stable manner and refusing to save their customers the headaches by just honestly telling us it's broken. Leaving us in the dark causes far more issues than it solves.
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Tim