Hi,
1. Can you please explain this in more details? I am not sure what are you reffering to exactly.
3. There are multiple major javascript errors on your site front-end, which cause further script exection to work, which may cause the plugin to malfunction as well: https://i.imgur.com/U5znIzm.png
On my end the plugin works at the moment, but it may not work on other browsers. I highly suggest investigating these issues, these are major script errors.
