I’ve experienced a problem when I use statues/user_timeline. I can successfully get the the most current tweet of a user when I do not set up the max_id. However, I got empty response when I set up a certain max_id number (for example, I use the id of the most current tweet minus one as the max_id, and I’m sure it exists.). It really bothers me. Does anyone has an idea or possible reason what’s going on here?