ICloud for Windows Doesn’t Show Calendars or Contacts in Outlook

A client of mine just got a new W11 laptop. We got Outlook set up and working as desired (for both a Yahoo and Apple email account). Next I downloaded (from the Microsoft Store) iCloud for Windows, and it installed fine. When it was launched and the client authenticated, we selected ‘just’ Contacts and Calendars, and (after clicking ‘Apply’) it said that it was successful (after watching it ‘supposedly’ copying ~2000 contacts and 20 photos).

However, when we opened Outlook, neither the iCloud Contacts or Calendars appeared (something that I have successfully done for quite a number of clients)

I checked to see that the Outlook addins showed iCloud, and it appeared to be installed/working correctly.

I tried signing out/in to the iCloud app, uninstalling/reinstalling the app, and rebooting (several times), but although there were no errors shown anywhere, nothing shows in the Outlook Calendars or Contacts.

Others have posted to this forum with similar issues, but there don’t appear to be any suggestions. Hopefully someone will have some ideas - they would be very-much appreciated.

Thanks.