Hi! You are correct - The Renpy version currently only has the first two chapters (Sequence 0 and 1). (SE v0.2.0 is available here in itch for people who bought the original, and SE v0.1.0 is a free demo with Sequence 0).
I will be slowly updating the next chapters into Renpy format as well. Beta-testing and bug-reporting is appreciated for the chapters I have already converted!