don't know what is going on, i just downloaded it with no issue whatsoever.. but that is your choice maybe someone else can verify the download is working for them?
Its fully understandable - this game isn't being designed with 'lowpoly' in mind-- i could technically get good skin closups of any of my characters in it to show skin detail. I maybe adding some low poly soon but not my intenstion unless i port mobile, then ill redirect a low poly version. :)
JDownloader2 can resume failed downloads. If it's a common problem for you, maybe try it out. It also can download faster from slow sites (obviously capped to your download speed)