Die Bezeichung ist falsch: Es handelt muss heißen "Evangelisches Gemeindehaus"
(vgl.: http://christus-kirche-beckum.de/ueber-uns/gemeindebuero/)

Evangelische Christus-Kirche Beckum
(die Beckumer Christus-Kirche wird mit Bindestrich geschrieben)

Die Adresse wird mit diesen Angaben nicht gefunden: Schlehecker Straße 120, 51503 Rösrath - warum, alles stimmt?

This building is not there anymore. It was destroyed in a fire, perhaps best to remove building

"Old ruin of defensive tower and wall (built in 1928)"
POI name: Halterkogel
POI types: natural-peak
OSM data version: 2017-11-17T20:18:02Z
#mapsme

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 This is an auto-generated note from MAPS.ME application: a user reports a POI that is visible on a map (which can be outdated), but cannot be found on the ground. User comments: "home" (OSM data version: 2017-02-15T16:20:03Z) #mapsme

Main Bonneterre Road

Das ist keine Kleingärtenanlage mehr. Da stehen jetzt Wohnhäuser.

Brunnen fehlt (Trinkwasser)

"wrong location "
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 This is an auto-generated note from MAPS.ME application: a user reports a POI that is visible on a map (which can be outdated), but cannot be found on the ground.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: Superspar
POI types: shop-supermarket
OSM data version: 2017-10-20T12:20:02Z
#mapsme