Like I said . It's true that the future would change , and it just happen right now . I'am here to find him and I believe that he is not missing or dissappear . He simply went into hiding .Didn't John say something like he might not return to the same future because there's a good chance he might change the past enough for it to butterfly? Whether or not John Titor is real, your message contradicts with what he said and what people from his time would have expected to happen.
What is your native language, out of curiosity?