Shared Calendar Could Not Be Updated

Shared Calendar Could Not Be Updated. Adjust the permissions if necessary to allow syncing with outlook. In account settings, click change, click more settings, advanced tab, uncheck download.

My wife and i just updated to iphone 16 pro and pro max, with ios 18.2.1. A user will share their calendar and the recipient won’t be able to see it because the calendar will show “cannot be updated” or some similar message on the calendar tab.