I have tried from my office it show available download site. Then I used same installer (setup-x86_64.exe) at home it not show anything. Both my pc (office and home) i set up go
You Should try adding this site it is working for me.
Japan: ftp.iij.ad.jp(ftp), ftp.jaist.ac.jp(ftp), ftp.yz.yamagata-u.ac.jp(ftp), ftp.iij.ad.jp(http), ftp.jaist.ac.jp(http), ftp.yz.yamagata-u.ac.jp(http)