Print option not working

Hi Support,

I try to print my page by print-o-matic plugin, All the settings are correct, but when I add this into any post/ Page by shortcode [print-me] it is not printing any, it looks blank when I tried to print.

I have created a sample page for testing. Please have a look and please help me to fix this as soon as possible.

https://www.ayurfood.ch/sample-page-print/

The page I need help with: [log in to see the link]