Rostock?

Rostock is a city in Germany, approximately very far away from Goslar, where this picture was taken. There is no direct service from Goslar to Rostock, nor has there ever been any. And frankly, if there was such a service using class 628/928 DMUs, I'd have doubts anybody would use it anyway.

My guess is that either someone just changed the display to something saved in the software and forgot to check whether it made sense, or that whatever changes the display is broken.

For reference, a train of class 628 consists normally of a class 628 car, which is motorized, and a class 928, which is not motorized (and consequently what I always choose when I drive with one of those). As with all railroading, exceptions apply.