Hello,
Both parameters were referenced on our previous update:
We also recommend you to try setting the method option as script and enable the debug mode to get more info in the logs of Apache:
http://www.phpdocx.com/api-documentation/format-conversion/convert-Word-docx-into-pdf-with-PHP
Please check this docpage and this one (Available Options):
For further support please write to contact[at]phpdocx.com . The dev team can check it directly on your server; you need to send access to your server, the path were phpdocx is installed and an URL to test it using a web browser.
Regards.