Plugin Conflict Woocommerce Smart Order Page

I have your Plugin installed and also the Plugin mentioned in the title. The Plugin merges orders together and is using for this wp_nonce in the URL. When I have the PDF Builder Plugin activated. After merging I am sent to a blank page. When the PDF Builder Plugin is deactivated and I merge order it redirects to the shop page as intended. Any idea what is causing the blank page, I really have to get rid of it for my client.