The OHAI site to access the instructionsto build the rotator or antennas is not working with a 503 error code.
OHAI is not active any more.
Searching here in the forum you can find related threads which pointing to what is available, for example in this thread.
Like I saw in the post you referred to, with it being a wiki. so long as I don’t edit the design, I can revamp the folder structure? Maybe add stl files for people who just want to hit print? Nothing crazy, just make it more straightforward and possibly an instruction manual.