Hi NinaNesterovaOSM,

https://www.openstreetmap.org/way/580177647

why admin_level=7? That way is part of two admin_level=6 boundary relations and one admin_level=8 boundary relation, so =6 was correct based on the wiki documentation (https://wiki.openstreetmap.org/wiki/Relation:boundary): "Boundary ways may have boundary=administrative and the admin_level=* of the highest border"

Also you are adding lot of layer=* tags, e.g. https://www.openstreetmap.org/way/771578194/history
this means that that way passes over the building, but doesn't seem the case based on aerial imagery.