User manual for CellProfiler 3.1.8 unavailable online

CellProfiler 3.1.8 for Mac points here for the user manual:
But that AWS server won’t respond (2019 Jan. 29 – 31). I’ve never seen it.
Is the user manual available anywhere else?

Hmm, from where/what browser/etc are you trying to access it? I just clicked on it and it opened fine in both Chrome and Safari.

Do the other manuals open for you? The 3.1.5 manual should be functionally quite similar.

Wow. Yup. I just tried again, and there it is. I’ve been hitting that URL for days with no response. Weird.
I’ve been using Chrome 71.0.3578.90 on Mac Mojave 10.14.2