Calendar not showing iCloud calendars

Hello Steven Keirstead

Let's follow the guidance below which can help:

"If your iCloud Contacts, Calendars, or Reminders won’t sync

 Learn what to do if your iCloud Contacts, Calendars, or Reminders aren't appearing on all the devices that you use with iCloud.

Things to check first

1. Check the system status of iCloud Contacts, Calendars, or Reminders for services outages or connection issues.
2. If a reminder isn't showing up on some of your devices, make sure that your iPhone and iPad have the latest version of iOS or iPadOS, or that your Mac has the latest version of macOS.
3. Make sure that you're signed in to iCloud with the same Apple ID on all of your devices. Then, check that you turned on Contacts, Calendars, and Reminders in your iCloud settings.
4. Check that the date and time settings on your device are correct for your current location. 

macOS

After each step, check your contacts, calendars, or reminders.

Refresh your calendars

You can refresh your calendars from the Calendars app:

1. Open the Calendar app.
2. From the View menu, choose 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.

Check your default Calendar, Reminders, and Contacts account

If you store and edit your events in iCloud instead of another place, 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:

1. Open the Calendar app.
2. Choose Calendar > Settings. In macOS Monterey or earlier, choose Calendar > Preferences.
3. In the General tab, make sure that one of your iCloud calendars is the default.

If you store and edit your contacts in iCloud instead of another place, like On My Mac, Exchange, or Google, then iCloud automatically updates your contacts. If you use multiple accounts on your Mac like iCloud, Gmail, and Yahoo, make sure that iCloud is your default Contacts account:

1. Open the Contacts app.
2. Choose Contacts > Accounts.
3. Click the iCloud tab. Make sure that you're signed in with your Apple ID and that Contacts is enabled. 

As long as you've turned on Reminders in iCloud Settings, your iCloud reminders appear on your Mac.

Delete completed or overdue reminders

1. Open the Reminders app.
2. Go to the Today view and check for any overdue reminders.
3. If you find any, check the empty circle to complete the reminder, or delete the reminder.

Repeat these steps on each device that's using iCloud Reminders.

Restart your computer

After you restart your computer, check if you fixed the issue. 

If you still need help, contact Apple Support."

Cheers.

In General tab Mac calendar, I am not presented with iCloud calendar as an option.

Hey Steven Keirstead,

At this point, we would recommend reaching out to Apple Support. They will have the necessary tools to investigate into this matter more with you: Apple Support.

Keep us updated!