Unable to answer "How many levels does this building have?" for osm.org/way/307378821 via StreetComplete 2.4:

Haus weg

Ueberbauung fehlt

"Ich habe den korrekten Standort eingetragen"
The place has gone or never existed. This is an auto-generated note from MAPS.ME application: a user reports a POI that is visible on a map (which can be outdated), but cannot be found on the ground.
POI name: Rorschach, Wachsbleichestrasse
POI types: highway-bus_stop
OSM data version: 2018-01-26T12:04:02Z
#mapsme

"Öffnungszeiten für 1.4. bis 30.9."
POI name: Rossbüchel
POI types: amenity-restaurant
OSM data version: 2017-05-11T13:22:09Z
#mapsme

"Center of sample"
POI has no name
POI types: landuse-forest
OSM data version: 2017-07-28T09:42:02Z
#mapsme

Dieser Punkt liegt auf dem Gebiet des Kantons St. Gallen (nicht Thurgau)

Diese Bäckerei gibt es nicht mehr - Geschäftsaufgabe.

Does this way exist?

Judging from bing aerial imagery this is rather a track than a path, but I did not yet have a chance to verify locally.

Studerswilerstrasse anstelle Studenwilerstrasse