I can’t seem to open the site, it automatically starts a file download (download.gz) whenever I visit it. There might be an issue with the gzip encoding there. Let me know when it is fixed, and I will check it again.
The issue is most likely, that there are 2 fatal errors visible in the javascript console, preventing further script execution, please see: https://i.imgur.com/gUWXkoA.png
Unfortunately these are not coming from the search script, and I’m not able to tell the source, as it is minified. These errors are not present on the main page, so it is very likely the cause of the issue.