I believe you may have some misconceptions about the capabilities of the ExportPDF service. ExportPDF allows you to convert PDF files to Word documents that you can then edit. This service will not convert make the PDF file into a fillable form. You'll still be limited by the format structure of the content within Word. To convert a PDF file into a fillable form, you'll want to look at Adobe Acrobat.
If you ever need immediate support for your ExportPDF subscription, our support staff would be happy to assist! Please visit: http://helpx.adobe.com/contact/
Please let me know if you have any questions.