My wife's new iPhone 12 Pro, with iOS 14.3 keeps coming up with a blank Calendar, and any entries she puts in it, will be gone a few days later. It is synced via iCloud to her MacBook Pro (that is still on Catalina, as it's a 2012 version). Any thoughts as to why the items disappear?
Thanks!
Yesterday I upgraded from 10.10 Yosemite to 10.13 High Sierra. Everything seemed fine ... but when I opened Calendar, every single entry and almost every calendar was gone!
I tried restoring from Time Machine, using the backup created just before downloading 10.13. It restored every entry up...