Calendar not sync.
iMac (Retina 5K, 27-inch, Late 2014), Mac OS X (10.7.5), null
iMac (Retina 5K, 27-inch, Late 2014), Mac OS X (10.7.5), null
HI there Sandorolah,
It sounds like you're getting an error about your account being under maintenance when you log into it at www.icloud.com. I would start by clearing the cache in the browser you are using to access it with the section labeled "Troubleshooting the cache" in the following article:
iCloud: Troubleshooting web browser issues with iCloud.com
https://support.apple.com/en-us/HT203534
If the issue persists then I would reach out to the iCloud support staff with this link:
What’s happening with iCloud?
Thank you for using Apple Support Communities.
Thanks for your reply. It is not the problem, unfortunately. None of my devices synchronized then a week back. It affects calendars and notes. My iPhone 6 reminds me sometimes that I should enter my iCloud password. It does not help. I usually use my different devices to manage family and my company calendars. The sync via iCloud and I miss nothing. It does not work anymore.
Calendar not sync.