The download links on post 1 for version 0.4 are named ...mac...
Thus I think the win/linux versions are missing. The mega-link in the last post works and offers version 4.01.
Yeah, the Win/Linux list of links all (except MEGA) link to download pages for OnceAPornATime_Chapt2_v0.4-mac.zip, which is the same size as the download pages for the Mac versions, so it's not just a wrong file name for the PC version.The mega link also contains the PC version. Also, there is no password this time, no Patreon quest on this update (ver. 0.4)
Only the MEGA link actually has a 4.0.1 PC version for download right now.