Unable to answer "Are these opening hours still correct?" – on level 0: DB-Reisezentrum (Tourist Information Office) – https://osm.org/way/513945821 via StreetComplete 62.2:

Reisezentrum is closed since 14.12.25. 
DB Information counter still in use. Couldn't confirm opening hours.

Attached photo(s):
https://streetcomplete.app/p/325576.jpg