Some user can be legendary, hero, Sr member and full member because they already had enough activity to rank up. In this year, 2018 we can not rank up easily because there is a merit system. You can read about merit in many articles, one of them is on this forum. I hope you 're not lazy to search it by yourself I will only inform you that if you want to gain a merit, you have to be enough diligent and kind people in this forum, so you can begging another member who has sendable Merit to give you a merit. You can get merit, not from random people only, but you can join a campaign or event where you can do a task which is given by the moderator.