Please stop adding national roads (network=GR:national) that do not exist: the list of national roads are at https://wiki.openstreetmap.org/wiki/Greece/National_Roads. The ring road relation that you added is not a national road, so I had to remove it. Also, please get in touch with the Greek community because we have a lot of concerns about your recent edits, such as fake junction layouts, and your lack of communication with us.