Button not working

Hi. Can you help me? I installed your plugin, activated it and posted the shortcode on the page. Alas, when I click the printer icon, it does nothing. I am using the Enfold theme.

I am viewing the site in Chrome. Tried it in Safari too, but not result.

I appreciate any help or guidance you can give me.
Thanks!
Melodie

https://ww.wp.xz.cn/plugins/print-post-and-page/