I bought today the digital copy of X-plane 11. Download was unbelievable slowly. with my 30 Mbps connection it took 12 hours, with 300 - 500 kBs speed. When it came to "finishing up" I got error message, that the download is not possible, and that I have to check the internet connection! Sometimes it switch to something about "last 50 second" etc.
I don't have any clue, what is the problem, my internet connection is perfectly. If the download and install will not be OK, I will my money back!