"it is closed down since more than a year. signs are still up but no activity what so ever. passes the location several times per week. "
The place has gone or never existed. A user of Organic Maps application has reported that the POI was visible on the map (see snapshot date below), but was not found on the ground.
OSM snapshot date: 2025-10-21T03:35:21Z
POI name: Македонска Пошта
POI types: amenity-post_office
 #organicmaps ios 2025.11.11-5-ios