[Forminator Pro] Unable to upload files into my Forminator Pro form

I'm utilizing Forminator Pro inside my career page so that applicants can submit their information and attached their resume. The form was created and added to: https://jrcinco.com/about/careers/ (UNDER THE FIRST ACCORDION TAB). Unfortunately even though the 'file upload' is there, the form won't allow you to upload - I tried .DOC; .DOCX; .PDF and .TXT and none of them worked. Any thoughts on how to resolve this issue?