Hello Tramampoleen,
Thanks for asking the Apple Support Communities for help with Contacts. I am happy to provide an article to help with this and iCloud sync.
Please try the troubleshooting provided in this help article:
Get help using iCloud Contacts, Calendars, or Reminders - Apple Support
Please review this relevant section of the article:
After each step, check your contacts, calendars, or reminders.
You can refresh your calendars and reminders from the Calendars app:
- Open the Calendar app.
- Choose View > Refresh Calendars.
Since the iCloud Birthdays calendar updates hourly, you might not see changes to birthdays in the Contacts or Calendars app for an hour.
If you store and edit your events in iCloud instead of another account, like On My Mac, Exchange, or Google, then iCloud automatically updates your calendars. If you use multiple accounts on your Mac like iCloud, Gmail, and Yahoo, make sure that iCloud is your default Calendar account:
- Open the Calendar app.
- Choose Calendar > Preferences.
- On the General tab, make sure that one of your iCloud calendars is the default.
After you set up iCloud Reminders, you might need to quit and reopen Reminders on your Mac. Then make sure that you set up your account correctly in Reminders:
- Open the Reminders app.
- Choose Reminders > Accounts.
- Click the iCloud tab and make sure that you're signed in with your Apple ID.
- Quit the Calendar and Reminders apps.
- Choose Apple menu > System Preferences and click iCloud.
- Deselect Calendars and Reminders.
- Close System Preferences and wait about a minute.
- Choose Apple menu > System Preferences and click iCloud.
- Select Calendars.
- Open Calendar and Reminders.
After you restart your computer, see if you fixed the issue.
Please let us know if you've found this information helpful. Don't hesitate to reach out with any additional questions or concerns you may have on this issue. It will be a pleasure to continue working with you toward a solution.
Thanks and have a wonderful day.
