Hi,
Thank you for the details!
I checked the javascript error console, and I immediately noticed something when triggering a search. It was pointing to an error within the plugin script files, however to a line of code, which is non-existent in the actual plugin scripts.
It appears, that there is a 3rd party service/minify/CDN or something similar, which is altering the plugin scripts, pushing some sort of a polyfill code to it, but it does not work: https://i.imgur.com/KxZIvlM.png
On the screenshot above, the underlined section does not exist within the original plugin script files, it was altered by something. I suggest excluding our plugin files from that feature if possible, it will very likely resolve the issue as well.
