I USED THIS CENTRAL STATION A FEW TIMES DURING MY STAY IN MUNICH…read more===============================
My husband and I took one of the regional ICE (white and red) trains from Munich to Stuttgart on Monday, April 20th, because I had tickets for the Porsche Factory tour.
Everything worked out pretty well, but you will need the PIN for any credit cards you use in the machines to buy tickets. We didn't have that. We then had to find out where the information office was and purchase tickets at the counter.
You could also buy your tickets in advance on one of the aps, but I couldn't get the DB ap to work at all when in Munich even with a full cellular plan. Trainline seemed to work a lot better.
My main point is that you probably shouldn't wait until the last minute if you need to be in another city at a set time.
Also, carry lots of Euro coins while in Germany. You have to pay 1 1/2 Euros at this station to use the restroom.