It may be on my end obviously, but for what it's worth the manual download times out for me, for all four parts.:c
"took too long to respond"
Tried with various browsers, Windows Defender, no firewall.
Firefox managed to get the download window open before it fails, but that's the best I can do.
/edit
And the same also happens with OVGME.
Unless EU IPs are blocked? I did try with the NA mirror from the OP after all.