When I am invited to a shared event from the iCloud Calendar I do not get a notification. I instead get an email (to my me.com address) that I have to add to the calendar then accept. When I send one to my wife she gets a notification banner on her iPhone /iPad and can accept there and it's done. I'm using a me.com address and have checked online at iCloud.com that the notifications settings is set to in app and not email. Any ideas what settings different on my end?