Terrible. Second day using this app. Logged out without telling me, stopped receiving messages without warning. I went to log in, account had "violated terms of use" and needed email verification, hit the resend verification email 3 times and waited, never received an email. Once I used recover password I received an email. Allowed me to sign in, where none of the messages I'd been sent were displayed. Within 3 minutes it logged out and said account dead/inaccessible. Still no explanation.