If you are getting an error that says something like this:
You are probably either using a browser that has an ad-blocker enabled or an antivirus program that is causing the problem. In the case of an ad-blocking browser could either be a browser that has builtin ad-blocking like Brave or it could be an ad-blocking extension that you added. Ad-blockers tend to remove the "referred-by" field, but because of the way our downloads are configured you will not be able to access the files until you disable the ad-blocking. Similarly, if you have an antivirus program that removed the "referred-by" field you will see this problem. In this case you will need to disable the antivirus program while you are downloading your music (don't forget to turn it back on when you're done).