So sorry you're having trouble downloading the content. We're finding that certain platforms are having trouble with the length of our file names.
If you're using a PC, go to https://www.7-zip.org/ and download this free resource to help you access all of our content without issue. Once you've downloaded 7Zip, you can open the files directly through that platform (here are quick steps on that process).
If you're using a Mac, you can search the regular app store for a Mac-friendly version but UnArchiver (https://theunarchiver.com/) is a good option. Here's a video to help you use this resource.