I'm having problems getting icloud to sync with my MBP, ipad, and Iphone. i have updated all the apps on all devices, but when i make a change say in Pages, it doens't show up in either the iphone or iPad. when i click on the iCloud icon near the address bar, it just says that it will show open tabs on other iOS devices. I have open tabs on my other devices but nothing shows. i've double checked that i'm signed into icloud and all the apps are listed there, what am i missing?