Hey Ercan 55, please use good changeset comments, not "n", "ne", "new", "edit", or "delete". Also you're creating one changeset for every building you add; it is actually better to group them in groups of 20 or even 50, then make ONE upload that says: "tracing buildings in XYZ" or so. (Where XYZ is the name of the place.) If you delete or change something, it is always good to specify a reason: "Deleting POI because the shop has closed", "Deleting building because it has been demolished" or so. (Of course you do not need to use English, you can use any language spoken in the area where you edit too.)