Unable to answer "What’s the height of the curbs at this crossing?" – Marked Crossing – https://osm.org/node/1443076387 via StreetComplete 57.1:

There are only 2 crossings here. This one does not seem to exist.

Unable to answer "What’s the surface here?" for https://osm.org/way/196020402 via StreetComplete 54.1:

Most of these trails have a surface made out of sea-shells.

Attached photo(s):
https://westnordost.de/p/181563.jpg

Unable to answer "This shop has been vacant. What’s here now?" for https://osm.org/node/3798659012 via StreetComplete 55.0:

Hier ist kein Gebäude mehr

Unable to answer "What are the opening hours here?" for https://osm.org/way/122907928 via StreetComplete 51.1:

Derzeit geschlossen & umgezogen.

Attached photo(s):
https://westnordost.de/p/140490.jpg