I'm sorry to hear that! Here are some things to check:
- Try the downloaded version on a PC (mobile devices are not supported).
- Try it with multiple browsers (Chrome is a good one to test by default) and see if you have any browser plugins that might be blocking it.
- Make sure all the files are unzipped and in the same folder (You should have an index.html, a readme file, and two folders: "Assets" and "Fonts").