Hello marysiaroki,
Thank you for using Apple Support Communities. You mentioned that you're experiencing issues with data not fully syncing to your iCloud. If so, we'd like to help out by recommending some isolating steps that you can try. Let's follow the steps below:
1.) Make sure your network is using the recommended settings: Recommended settings for Wi-Fi routers and access points - Apple Support
2.) If possible, connect to a completely different network. This is a great isolating step to try.
3.) Make sure your date and time settings are set up correctly: If your iCloud Contacts, Calendars, or Reminders won’t sync - Apple Support
4.) Another steps you can try is to test this issue in safe mode. This step can help isolate possible software related issues: Use safe mode on your Mac - Apple Support
If you're using an Intel-based Mac
If you're not using a Mac with Apple silicon, you're using an Intel-based Mac.
1. Turn on or restart your Mac, then immediately press and hold the Shift key as your Mac starts up.
2. Release the key when you see the login window, then log in to your Mac.
3. You might be asked to log in again. On either the first or second login window, you should see ”Safe Boot” in the upper-right corner of the window. If you can't start up in safe mode, make sure that your Mac isn't using a firmware password.
Depending on your results, follow the steps under “If the issue continues in safe mode” or “If the issue doesn't continue in safe mode”.
We hope these steps help you. Thank you for using Apple Support Communities.
