The "download" name in the link you are using has been discontinued. You cannot download comma delimited historical data from that link any longer.
However, if you replace "chart" instead of the word "download" you will get output, but it is in JSON format.
As mentioned in earlier posts, YLOADER has been repaired and is working. It can output and append data to existing files.
Also, Amibroker has a component that allows for downloading that was patched here as well. I fixed the patch to also append data.