Please note this is an old forum thread. Information in this post may be out-to-date and/or erroneous.
Every phpdocx version includes new features and improvements. Previously unsupported features may have been added to newer releases, or past issues may have been corrected.
Yes, you can use other server to install the conversion plugin. You'd need to create a PHP script that calls this server to send the documents to be transformed and a way to return the PDF output.