penggunaan kata at ( area) exple: i am at school, he work at a school. dia bekerja di daerah atau area penggunaan kata in (dalam) example: dani watching in the room, put my bag in my room. in biasanya di pakai di dalam penggunaan kata on (atas) example: take my glass on the table, dont sit on the floor.

yes, that do not change your email and id maybe same your rank