I created a calendar that I have given my husband permission to share with me. It, of course, shows up across all of our devices. It all of a sudden went "public" today . . . don't know how! (My husband all of a sudden got a notification that it went public.) I thought, "Well, I'll delete it." So I went to EDIT > Delete > OK and deleted it. EXCEPT AFTER ABOUT THIRTY SECONDS it showed up again under my list of iCloud calendars! So I deleted it like five times and each time, it came back. I won't go away! Help?