How do you rank up

Hi everyone. I started using this website again after a year and forgot how to rank up. I am a slifer right now and can someone tell me how i can get ra yellow

Check out the #faq channel in the discord or check out the below articles for info about ranking up

http://www.duelacademy.net/t50522-introducing-the-new-ranking-system

http://www.duelacademy.net/t50554-rank-update-for-may-2018