Honestly, I don’t know why it’s working on the local version.
When specifiying fields to display, according to the documentation, you need to supply either the field key (looks something like field_123456789abcd) or field ID (which is the post ID for the field) http://www.advancedcustomfields.com/resources/acf_form/
Try changing this line to use one of the above
'fields' => array('mws_application_request'),
