Button not working

Hello, the plugin is not working for me. After pressing the button in the cart, it opens my homepage with this link: https://kerbsrs.com/?cart-pdf=1&_wpnonce=d8119f7162 and nothing else happens.

I’ve tried with different settings but nothing changes this issue, plus I didn’t find anything on the FAQ or forum. To replicate: Open https://kerbsrs.com/ and add any product to the cart, then go to https://kerbsrs.com/cart/ to see the button and press it.

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