MyBookWorld won't download file to Windows

I have an old MyBookWorld NAS that I stopped using when I built my windows server. To fully transition I went to transfer all the items off of it to my new server.

However some of the items just seem to timeout. A large folder about 100gb, transfers for hours and then all of sudden the progress bar disappears and it never shows up on the new drive.

Like it timed out when I was gone?