there are a few problems on your page:
1) in the Upload Files (file_dl2) server behavior, you have set the default file setting to use the file_dl of the WADAdownload recordset, it should be set to use the file_dl hidden form element instead.
2) in the Upload Files (up_photo) server behavior, you have set the default file setting to use the img_dl of the WADAdownload recordset, it should be set to use the img_dl hidden form element instead
3) in the update record behavior, you have bound the img_dl column to the img_dl of the WADAdownload recordset. Click the lightning bolt next to it, from the bindings panel, expand the Uploaded Files (up_photo) binding group and select the Server File Name binding.