Unable to answer "Are these opening hours still correct?" – Sigi's Haarstudio (Hairdresser) – osm.org/node/2836019872 via StreetComplete 60.3:

Wohnung

Unable to answer "How many levels does this building have?" for osm.org/way/866040495 via StreetComplete 29.1:

barn

Attached photo(s):
https://westnordost.de/p/29064.jpg

hier fehlt das Wohnhaus Hauptstrasse 13

via StreetComplete 30.0

Attached photo(s):
https://westnordost.de/p/31601.jpg

Unable to answer "How many levels does this building have?" for osm.org/way/638710820 via StreetComplete 29.1:

Scheune

Attached photo(s):
https://westnordost.de/p/29611.jpg