1) The Digital File pro Upload code on this page is not complete.
You will ned to remove the DFP Upload file server behaviors and reapply them
When you reapply the Upload File server behaviors, make sure to bind the default file to the hidden form elements.
2) In the update record server behavior, you are not binding the image columns correctly. for each of the image columns, click the lightning bolt, expand the WA Upload Files (File Field Name) Collection and select the Server File Name binding.