Unable to answer "This shop has been vacant. What’s here now?" – house number 43b – https://osm.org/node/1298388201 via StreetComplete 63.0:

Sparkasse UND Steuerberater Brede &Wulf (Neben Eingang links neben Sparkasse, ausgeschildert)

Attached photo(s):
https://streetcomplete.app/p/332736.jpg
https://streetcomplete.app/p/332737.jpg
https://streetcomplete.app/p/332738.jpg