when i'm not connected to chat features but the person i'm messaging is, i'm unable to receive messages. i had to uninstall and reinstall the app, then re-setup chat features to reconnect. when i was finally able to send a chat, i immediately received old chats that were not decrypted, and therefore unreadable. it would be better if chats could still be received as sms even if the sender or recipient isn't connected to chat features.