Binaries and docker images are for x86_64 hardware. Windows version has been tested on Windows 7 one day an opened on a Windows 10 recently (and is by far the least well tested...).
The python pip package Kappy is available on linux and MacOS only. Sorry Windows users, we know how to build all the pieces independently for you but we never managed to properly assemble and upload on pypi a working 'wheel'.
As explained in the README on github (and you can read the instruction there), compiling from source is a reasonnable challange if you can (and accept to) use opam the package manager for OCaml. It is super crazy without it.
A docker version on which the image does not work or a modern web-broswer on which the online UI does not work has not been encontered. Please report any discovery.