There’s a Cliffy error that is happening when players open their game mail, which is causing the mail box to close, and forcing players to restart their game.
We are aware of this issue and are working on it right now. You won’t have missed any of your pre-existing rewards, so please don’t worry. (The mail is trying to give you something that doesn’t exist in game yet cough deeds cough which is why it isn’t working.)
If you haven’t opened your mail yet, please hold off until we push out a fix.