It's happening again to some of us. It starts with the status update getting stuck on December 24. Then the following "Account not currently authorized - please login to reauthenticate!". And after reauthenticating, nothing happens, and slowly one by one in the achievement tab, some of your line item scores start to disappear.
Yet in myChevrolet app, I have the EV miles displayed, and my VoltStats to OnStar connection authenticated. No more mileage accumulation since December 24, 2017.

Yet in myChevrolet app, I have the EV miles displayed, and my VoltStats to OnStar connection authenticated. No more mileage accumulation since December 24, 2017.