Well sometimes is better to use direct download from steinberg site. but it doest work best every time - its slower, but it alows to continue in case of some download fails, probably not everytime.
Regarding steinberg downloader, its strange. I was trying to download HS6 content, when I was on 10Gb I decided to pause, when I was try to continue it said that only 3gb was downloaded, but status bar was in 1/3 ( abouzt 10gb) so I was continue download and also turn on measurement of downloaded data and at the end, it downloads 20gb to finish this 30gb file. So its laying about lost data.