Hello all; for the first time in a long time, some friends, family and I are having problems with our iPhones. The problems we are having are all the same. 1) If we go to iCloud in settings, I get the message: 2) One of us gets a "Apple ID Invalid" message. As for the rest, if we try to download something from the App Store, we are able to put in our Apple ID Passwords, but then get the message: 3) Finally, sending an iMessage between devices does not work consistently. For example, over the weekend, a relative sent me 5 messages. I received them all as iMessages at 7:18 Monday morning. They have not worked since in either direction. While it's not just me, a few of us are unaffected. One friend isn't having a problem at all. I sent him an iMessage, and he sent me one back just fine.