An Anonymous Internet Puzzle -

This puzzle was posted on 4chan board r/mysteries as their logo says once you crack this they will follow you.
My question is once you visit the website your are presented with a black interface in which you are allowed to chat but the chat is a bit different if you say “Hi” the website replies “How are you” like “ohw rae ouy” I’m not getting how is this happening? Any idea how this is working?? this is the link to the website

They have built a chat bot that provides answers which are then turned into anagrams, a kind of puzzle with words mixed up in a sentence. Anagrams usually have a rule by which they scramble the letters so it is not that difficult to implement with a program.