I reverted your changes, because you added multiple roads and houses on top of already existing objects. If you want to improve the shape of a house or road, you should rearrange the existing nodes instead.

Also you changed things in Malawi and the UK in this changeset, thousands of kilometers apart. Please try to keep your changes contained to a smaller area. For example if you add new houses, only add the houses in one street and then upload your changes before moving to the next street or town.

https://www.openstreetmap.org/changeset/148727506