Incomplete download and damaged media

I am trying to download the standalone psychopy app for windows but the download task was quitted every time it hited 10%-70%. It never finished. I thought that it might be the internet issue but it just appeared all the time. I am not sure if there has a timeout issue that if the download speed is slow, then the task will be automatically stopped. My IP address is from China and the download speed is a littble bit slow. Anyone knows how to solve this problem? Thanks in advances.